Channel the message belongs to.
The sender's session id and display name.
Optional groupGroup id, set only when channel is "group".
Unique id of the message.
Mentions parsed from text.
Optional replyId of the message this one replies to, if it is a reply.
Send time as a Unix timestamp in milliseconds.
The raw message text, including any mention markup.
A chat message delivered to or sent from the room.
Example