public void SubscribeToUpdates(long accountId)
 {
     try
     {
         this.lastSubscribedAccountId = accountId;
         ApiAccessor.SubscribeToUpdates(new AccountMessageData(accountId), this.OnMessageDataUpdated);
     }
     catch (Exception e)
     {
         Logger.DisplayError("Account " + accountId + " failed to subscribe to updates", e);
     }
 }