IGA 3.6.2 / 3.7 --- What rest calls do I need to make to request the removal of a group or application from a user?

When an account is disabled / terminated in IDM we want to send a rest call to IG to remove specific applications / permissions from that user.

-get token

-/data/users to get user's unique ID  (not working yet)

-request/users/{User Unique ID}/perms  (working when submitting it based on data in IG catalog)

do we then do a /request/request ?

      -If so any examples of doing a removal?
      -What are the requestType values we can specify?
      -What do we specify for the recipient? The Source ID or unique ID value we retrieved earlier?

      -What doe we specify for the requestItem? The unique ID of the permission or application?

thanks!
Fred