{"event_ts": "1485975690.880722", "wee_slack_metadata": {"team": "d80c2b6c3127dbb1991917394ed219e8212a2606"}, "type": "mpim_joined", "channel": {"name": "mpdm-bob--alice--charles-1", "last_read": "0000000000.000000", "creator": "U407ABLLW", "is_mpim": true, "is_archived": false, "created": 1485975690, "is_group": true, "topic": {"last_set": 1485975690, "value": "Group messaging", "creator": "U407ABLLW"}, "unread_count": 0, "is_open": false, "purpose": {"last_set": 1485975690, "value": "Group messaging with: @bob @alice @charles", "creator": "U407ABLLW"}, "members": ["U407ABLLW", "U3ZKBBDL5", "U4096CBHC"], "latest": null, "id": "G3ZGMF4RZ", "unread_count_display": 0}}