Array
(
    [message] => Role list retrieved successfully
    [roles] => Array
        (
            [0] => Array
                (
                    [role_id] => 1
                    [role_name] => Admin
                )

            [1] => Array
                (
                    [role_id] => 2
                    [role_name] => Staff
                )

            [2] => Array
                (
                    [role_id] => 3
                    [role_name] => Users
                )

            [3] => Array
                (
                    [role_id] => 4
                    [role_name] => Group
                )

        )

)