[
  {
    "id": 1,
    "username": "john_doe",
    "email": "john@example.com",
    "role": "admin"
  },
  {
    "id": 2,
    "username": "jane_smith",
    "email": "jane@example.org",
    "role": "moderator"
  },
  {
    "id": 3,
    "username": "bob_johnson",
    "email": "bob@example.net",
    "role": "user"
  }
]