Hi @AJTaylor79, thanks for posting & using Zoom! We do have in-meeting events which will send POST requests upon each event; however, we do not have muted/un-muted events.
Transparently, I do not know if we are considering exposing muting/unmuting events through our public webhooks as they would constitute a very large volume of event data.
These events can be monitored using the Windows SDK if you are considering building a full application.