IS doesn’t really have a way for that to directly be used but if you check out Zapier, it can take that post and then update Infusionsoft for you. Otherwise it might require some code to point that post to.
If Zapier won’t receive it then there’s only one other way (that I’m aware of). By writing code and hosting it on a server, you can point the POST to the code and then that code will take the information passed to it and, using the api, update what even needs to be updated.