message: Make version int64
diff: },
  "version": {
  "description": "The version of the thread",
  - "type": "integer"
  + "type": "integer",
  + "format": "int64"
  }
  }
  },
  },
  "version": {
  "description": "The version of the message",
  - "type": "integer"
  + "type": "integer",
  + "format": "int64"
  }
  }
  },
  