LogUnsubEvent-wsproxy.js

<script runat="server">
Platform.Load("Core","1.1.1");

var subkey = Attribute.GetValue("_subscriberkey");
var jid = Attribute.GetValue("jobid");
var lid = Attribute.GetValue("listid");
var bid = Attribute.GetValue("_JobSubscriberBatchID");  
var prox = new Script.Util.WSProxy();

var props = [
    { Name: "SubscriberKey", Value: subkey },
    { Name: "JobID", Value: jid },
    { Name: "ListID", Value: lid },
    { Name: "BatchID", Value: bid },
    { Name: "Reason", Value: "WSProxy one click unsubscribe" }
 ];
  
try{
 var data = prox.execute(props, "LogUnsubEvent");
  Write(Stringify(data));
 }catch(e){
Write(Stringify(e));
}
</script>