public dynamic GetSubscriptionByApplicationId(string applicationId)
        {
            var subscriber = _cache.Get(_cacheAppId + applicationId) as SubscriberModel;

            if (subscriber != null && subscriber.Version == VersionNumber)
            {
                return(subscriber.ToDynamic());
            }

            subscriber = StorageMethod.GetByApplicationId(applicationId);
            if (subscriber != null && subscriber.Version == VersionNumber)
            {
                _cache.Add(_cacheAppId + applicationId, subscriber, MyCachePriority.Default);
                return(subscriber.ToDynamic());
            }

            var result = _webClientService.GetSubscriptionByApplicationId(applicationId);

            subscriber = JsonConvert.DeserializeObject <SubscriberModel>(result);
            if (subscriber == null)
            {
                return(null);
            }
            _cache.Add(_cacheAppId + applicationId, subscriber, MyCachePriority.Default);
            StorageMethod.AddOrUpdateSubscriber(subscriber);
            return(subscriber.ToDynamic());
        }