{"user_profile": {"avatar_hash": "g7f87f7015f8", "first_name": "Chuck", "image_72": "https://secure.gravatar.com/avatar/7f87f7015f8e5081190ece053e41b11e.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0010-72.png", "name": "chuck", "real_name": "Chuck Testuser"}, "text": "<@U4096CBHC|chuck> has joined the channel", "ts": "1485975606.000003", "subtype": "channel_join", "user": "U4096CBHC", "team": "T3YS5EAL9", "wee_slack_metadata": {"team": "d80c2b6c3127dbb1991917394ed219e8212a2606"}, "type": "message", "channel": "C407ABS94"}