Creating Users with Event Hooks

Hi all,

I am trying to get Okta to create, delete or edit users on a separate platforms by sending an API request triggered by the Event Hooks.
I have found the event hooks to the users actions such as User Activated, User’s profile changed in Okta and User Deleted but these events do not have enough information.
The Target section in the created JSON has the following;
We really need, firstname, lastname (yes I know these could be picked up from the display name) username and email addres, although the alternateId looks like the email address.
Is this something that could be gotten from the Display Headers section? I’m not sure it can be as looking at the events that the event hooks are triggered from, they don’t contain the above information.

Am I trying to do something that cannot be done?

Thanks in advance