{
 "response": {
  "responseContext": {
   "webResponseContextExtensionData": ""
  },
  "continuationContents": {
   "liveChatContinuation": {
    "continuations": [
     {
      "liveChatReplayContinuationData": {
       "invalidationId": {
        "objectSource": 1000,
        "objectId": "___objectId___",
        "topic": "chat~00000000000~0000000",
        "subscribeToGcmTopics": true,
        "protoCreationTimestampMs": "1577804400000"
       },
       "timeoutMs": 10000,
       "continuation": "___continuation___"
      }
     }
    ],
    "actions": [
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "20000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "20400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "20800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "21200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "21600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "22000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "22400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "22800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "23200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "23600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "24000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "24400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "24800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "25200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "25600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "26000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "26400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "26800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "27200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "27600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "28000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "28400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "28800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "29200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "29600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "30000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "30400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "30800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "31200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "31600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "32000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "32400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "32800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "33200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "33600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "34000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "34400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "34800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "35200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "35600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "36000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "36400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "36800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "37200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "37600"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "38000"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "38400"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "38800"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "39200"
      }
     },
     {
      "replayChatItemAction": {
       "actions": [
        {
         "addChatItemAction": {
          "item": {
           "liveChatTextMessageRenderer": {
            "message": {
             "runs": [
              {
               "text": "dummy_message"
              }
             ]
            },
            "authorName": {
             "simpleText": "author_name"
            },
            "authorPhoto": {
             "thumbnails": [
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 32,
               "height": 32
              },
              {
               "url": "https://yt3.ggpht.com/------------/AAAAAAAAAAA/AAAAAAAAAAA/xxxxxxxxxxxx/s32-x-x-xx-xx-xx-c0xffffff/photo.jpg",
               "width": 64,
               "height": 64
              }
             ]
            },
            "contextMenuEndpoint": {
             "commandMetadata": {
              "webCommandMetadata": {
               "ignoreNavigation": true
              }
             },
             "liveChatItemContextMenuEndpoint": {
              "params": "___params___"
             }
            },
            "id": "dummy_id",
            "timestampUsec": 0,
            "authorExternalChannelId": "http://www.youtube.com/channel/author_channel_url",
            "contextMenuAccessibility": {
             "accessibilityData": {
              "label": "コメントの操作"
             }
            },
            "timestampText": {
             "simpleText": "0:00"
            }
           }
          },
          "clientId": "dummy_client_id"
         }
        }
       ],
       "videoOffsetTimeMsec": "40000"
      }
     }
    ]
   }
  }
 }
}