def invalid_comment_body_with_non_existent_request(valid_staff_model):
    """
    A fixture for creating a comment body with non-existent client id.

    Args:
        valid_staff_model (Model): a valid staff model created by a fixture.
    """
    return {
        'message': 'I will be working on this soon',
        'request_id': 1,
        'staff_id': 1,
    }