{
  "key":"comment.created",
  "created_at":"2017-08-25T16:11:40.203Z",
  "data":{
    “message”:  'comment',
          'updated_field’: nil,
          'to_value' => nil,
          'substate' => nil,
          'priority' => nil,
          'amount' => nil,
          'recipient' => nil,
          'comment_id' => 37f22dc8-f737-4de5-b49b-0d5d415101112,
          'is_editable_comment' => false,
          'update_comment_url' => nil,
          'notification_countdown' => nil,
          'edited_at' => nil,
          'archived_at' => nil,
          'detail' => { 'raw_body' => body, 'rendered_markdown' => "<p>#{body}</p>" },
          'file_attachments' => {}
  },
  "uuid":"47a25dc7-e838-4de5-b49b-0d5d41510311"
}
AttributeType or Potential ValuesNote
keycomment.created
created_atDateTime
dataHashcomment.created activities will have one key called message.
uuidUUID