You closed a DM
{
"type": "im_close",
"user": "U024BE7LH",
"channel": "D024BE91L"
}
The im_close event is sent to all connections for a user when a direct
message channel is closed by that user.
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