-
  id: 1
  user_id: 1
  repo_id: 1
  status: 1 # unread
  source: 1 # issue
  updated_by: 2
  issue_id: 1
  created_unix: 946684800
  updated_unix: 946684800

-
  id: 2
  user_id: 2
  repo_id: 1
  status: 2 # read
  source: 1 # issue
  updated_by: 1
  issue_id: 2
  created_unix: 946684800
  updated_unix: 946684800
