{
    "roles": {
        "type": "object",
        "title": "Roles",
        "description": "User roles for authorization",
        "x-id-field": [ "username", "role" ],
        "x-list-columns": [ "username", "role" ],
        "required": [ "username", "role" ],
        "properties": {
            "username": {
                "type": "string",
                "x-order": 1
            },
            "role": {
                "type": "string",
                "x-order": 2
            }
        }
    }
}