A message was sent to a channel
{
"type": "message",
"subtype": "me_message",
"channel": "C123ABC456",
"user": "U123ABC456",
"text": "is doing that thing",
"ts": "1355517523.000005"
}
A me_message is sent when a channel member performs an action using the
/me command.
When an event occurs, we will send an HTTP POST request to your Request URL. The outer payload is uniform across all Events API methods, and contains fields like team_id and event. Learn more