{
  "continuationContents": {
    "liveChatContinuation": {
      "header": {
        "liveChatHeaderRenderer": {
          "viewSelector": {
            "sortFilterSubMenuRenderer": {
              "subMenuItems": [
                {
                  "title": "Top chat",
                  "selected": true,
                  "continuation": {
                    "reloadContinuationData": {
                      "continuation": "top-chat-mode-token"
                    }
                  }
                },
                {
                  "title": "Live chat",
                  "selected": false,
                  "continuation": {
                    "reloadContinuationData": {
                      "continuation": "live-chat-mode-token"
                    }
                  }
                }
              ]
            }
          }
        }
      },
      "actions": [
        {
          "clickTrackingParams": "tracking",
          "addChatItemAction": {
            "item": {
              "liveChatTextMessageRenderer": {
                "id": "message-1",
                "authorExternalChannelId": "channel-1",
                "authorName": {
                  "simpleText": "Viewer"
                },
                "authorBadges": [
                  {
                    "liveChatAuthorBadgeRenderer": {
                      "tooltip": "Member",
                      "accessibility": {
                        "accessibilityData": {
                          "label": "Member"
                        }
                      }
                    }
                  }
                ],
                "message": {
                  "runs": [
                    {
                      "text": "Hello "
                    },
                    {
                      "emoji": {
                        "emojiId": "wave",
                        "image": {
                          "accessibility": {
                            "accessibilityData": {
                              "label": "wave"
                            }
                          }
                        }
                      }
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "clickTrackingParams": "tracking",
          "addChatItemAction": {
            "item": {
              "liveChatViewerEngagementMessageRenderer": {
                "id": "notice-1",
                "message": {
                  "runs": [
                    {
                      "text": "Subscribers-only mode."
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "clickTrackingParams": "tracking",
          "removeChatItemAction": {
            "targetItemId": "message-0"
          }
        },
        {
          "clickTrackingParams": "tracking"
        }
      ],
      "continuations": [
        {
          "invalidationContinuationData": {
            "timeoutMs": 4321,
            "continuation": "next-token"
          }
        }
      ]
    }
  }
}