Activity URL for Notification Engine

Has anyone found a way/endpoint to get the link/URL for an Activity?

I’m looking to build a simple desktop notification feature for reminders on Activities via webhook. I want to mirror the functionality in Pipedrive now where we can click on an Alert (right now for @mentions) and then be taken to that specific object in Pipedrive.

However, I can’t seem to get this for Activities from the API. Any thoughts?