public void OnActionExecuting(ActionExecutingContext context)
        {
            foreach (var argument in context.ActionArguments.Values.Where(v => v is ConfirmRegistrationRequest))
            {
                ConfirmRegistrationRequest command = argument as ConfirmRegistrationRequest;

                _userValidationService.RequireValidConfirmationPhraseForInactiveUser(command.ConfirmationPhrase);
            }
        }