Is there a way to know/notified when a new user account is provisioned in GHES?

We want to create a user account monitoring and managing bot that fills in certain user account fields as soon as a new user account is created/provisioned in a GitHub Enterprise Server. We also want to be able to monitor when a user modifies any of those fields so that the bot can reset it to the company defined value.
What webhook event or some other log messages that this bot can listen to do that?
Are there bots or Apps already that do this?

:wave: hello there and welcome to the GitHub Support Community, @gstys!

While I’m not aware of a GitHub-owned (or maintained) application that does this, one approach you could take is creating a global webhook that listens for the a user event that fires whenever a user is created or deleted.