mutation UpdateBroadcast($input: UpdateBroadcastInput!) {
  updateBroadcast(input: $input) {
    broadcast {
      id
      name
      notificationTitle
      content
      contentFormat
      type
    }
    error {
      message
      type
      code
      fields {
        field
        message
        type
      }
    }
  }
}

{
  "input": {
    "broadcastId": "id"
  }
}

{
  "data": {
    "updateBroadcast": {
      "broadcast": {
        "id": "id",
        "name": "string",
        "notificationTitle": "string",
        "content": "string",
        "contentFormat": "TIPTAP",
        "type": "SLACK"
      },
      "error": {
        "message": "string",
        "type": "VALIDATION",
        "code": "string",
        "fields": [
          {
            "field": "string",
            "message": "string",
            "type": "VALIDATION"
          }
        ]
      }
    }
  }
}