determine which HA connection has returned AddEventHandlerSubscriptionAsync event

[pcgear]

I am trying to connect multiple Home Assistant controllers to my code. The code snippet below is working and I am getting responses from two controllers. The problem is I can't determine which controller returns the response. I realize I could add different WS_OnEvent functions to separate the returns but that becomes cumbersome if there are 50 connections. Is there some method to make this determination more cleanly?

       var hassWSApi = new HassWSApi();
        var connectionParameters = ConnectionParameters.CreateFromInstanceBaseUrl("http://192.168.55.125:8123/", "...");
        await hassWSApi.ConnectAsync(connectionParameters);

        var hassWSApi2 = new HassWSApi();
        connectionParameters = ConnectionParameters.CreateFromInstanceBaseUrl("http://192.168.55.165:8123/", "...");
        await hassWSApi2.ConnectAsync(connectionParameters);


        await hassWSApi.AddEventHandlerSubscriptionAsync(WS_OnEvent);
        await hassWSApi2.AddEventHandlerSubscriptionAsync(WS_OnEvent);