public ActionResult <int> Post([FromBody] UserSubscribeRequest value)
        {
            var subId = _subscriptionRepository.Add(new Subscription
            {
                UserId    = value.UserId,
                ServiceId = value.ServiceId
            });

            return(Ok(subId));
        }
        public ActionResult Delete([FromBody] UserSubscribeRequest value)
        {
            var subscription = _subscriptionRepository.GetSubscriptionTo(value.UserId, value.ServiceId);

            if (subscription == null)
            {
                return(NotFound());
            }

            _serviceRepository.Delete(subscription.Id);

            return(NoContent());
        }