[
    {
      "username": "visitor",
      "password": "qwerty",
      "roles": "Guest"
    },
    {
      "username": "JohnSmith",
      "password": "1234",
      "roles": "Operator"
    },
    {
      "username": "James",
      "password": "Bond",
      "roles": "Observer"
    },
    {
      "username": "Administrator",
      "password": "HardPassword!",
      "roles": "Supervisor;ConfigureAdmin;SecurityAdmin"
    }
  ]