-
  id: 1
  uid: 1
  issue_id: 1
  is_read: true
  is_mentioned: false

-
  id: 2
  uid: 2
  issue_id: 1
  is_read: true
  is_mentioned: false

-
  id: 3
  uid: 4
  issue_id: 1
  is_read: false
  is_mentioned: true

# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly