{u'user_profile': {u'avatar_hash': u'g6f7a5bf7eb7', u'first_name': u'Second', u'real_name': u'Second Testuser', u'name': u'bob', u'image_72': u'https://secure.gravatar.com/avatar/6f7a5bf7eb782853afb1d33f28ca9ae7.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0019-72.png'}, u'inviter': u'U407ABLLW', u'ts': u'1485975458.000004', u'subtype': u'channel_join', u'text': u'<@U3ZKBBDL5|bob> has joined the channel', u'user': u'U3ZKBBDL5', u'team': u'T3YS5EAL9', 'wee_slack_metadata': {'team': 'd80c2b6c3127dbb1991917394ed219e8212a2606'}, u'type': u'message', u'channel': u'C3ZJKCGTU'}