API: How to PATCH a value as NULL

Your software
My Mautic version is: Hosted/Acquia
My PHP version is:Hosted/Acquia
My Database type and version is:Hosted/Acquia

Your problem
My problem is:
trying to blank out a value such as phone so the body looks like this:
“phone”: null

However, it doesn’t appear to truely null out the value. You can pass a space back but that isn’t the same. Does anyone have any thoughts?

These errors are showing in the log:

Steps I have tried to fix the problem: