[{
    "id": "user-1",
    "username": "admin",
    "password": "admin",
    "level": 1
}, {
    "id": "user-2",
    "username": "monitor",
    "password": "monitor",
    "level": 2
},{
    "id": "user-3",
    "username": "test",
    "password": "test",
    "level": 2
}]