In the Get Alerts API, some sort of Contact information should be shown so there is a way to notify the final users about the alert. If at least the Contact/User ID is shown then we can retrieve the contact information needed from the Get Contact by ID API.

I've reported this to the chat support and they told me so far there is no possible connection to match the data. It would be great to add this as this will help to make more use of the alerts, otherwise its some manual work to go and look for the contact information manually, when its already being used in your platform, I think its just finding a way to add this info on the Alerts API.