Advanced Trade API - Websocket channel name clash

On the new advanced trade WS, the level 2 channel and the user channel have the same type (“update”). It would be great if these had different types as the payload is different. This will make it easier for people using strongly typed languages to process these messages as we will be able to easily differentiate between incoming messages.

Using the “type” field to identify the message is great. Makes deserialization really easy for me in rust