We are creating a process to auto-create users in Workfront when they
are present in another system, but don't want the users to get all the
default notifications (they are only being used for reporting at this
time, and the default notifications are driving them crazy). It looks
like we can make a POST call to the USERPF endpoint to overwrite the
user's digest notifications and some other settings, but can't seem to
update the user's instant notifications using the same approach. Any
ideas?