[
  {
    "username": "admin1",
    "hash": "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8",
    "role": "admin"
  },
  {
    "username": "student1",
    "hash": "8d969eef6ecad3c29a3a629280e686cf",
    "role": "student"
  }
]