unread_message:
  id: 1
  from_user_id: 1
  title: test message 1
  body: some body text
  sent_on: "2008-05-01 12:34:56"
  message_read: false
  to_user_id: 2
  from_user_visible: true
  to_user_visible: true
  
read_message:
  id: 2
  from_user_id: 2
  title: test message 2
  body: some body test
  sent_on: "2008-05-02 12:45:23"
  message_read: true
  to_user_id: 1
  from_user_visible: true
  to_user_visible: true
