public SystemActivityNotificationManager(string serviceBusConnectionString)
 {
     _pubSub = new AzurePubSubManager(AzurePubSubManagerType.Publish, serviceBusConnectionString, SystemActivityTopic);
 }
 public SystemActivityNotificationManager(string serviceBusConnectionString, string subscriptionName)
 {
     _pubSub = new AzurePubSubManager(AzurePubSubManagerType.Subcribe, serviceBusConnectionString, SystemActivityTopic, subscriptionName);
     _pubSub.Subscribe(InternalOnMessageReceived);
 }