The type property is used to determine the shape of the data property of the update event.
enum MessageEventType
The data object will change based on the type of the message.
error short code
human readable error message
Optional cidIf the request provided a cid parameter, the response will include the cid provided.
Optional subscriptionsA list of all active subscriptions if the type is subscriptions
When an error occurs during evaluation by the WebSocket Server, this error message will be provided to the message handler.