This is the room messages stream. You just need the room ID for subscribing.
{
"msg": "sub",
"id": "unique-id",
"name": "stream-room-messages",
"params":[
"room-id",
false
]
}
Unsuscribe from a room
{
"msg": "unsub",
"id": "ddp-room",
}
If you want to subscribe to a user's messages stream, just pass __my_messages__
as the room ID.