How to update user category

Summary:

What is the REST API syntax for updating user category of an account ?

Content (required):

userCategory is not being accepted. There's an error that the attribute is not correct

Version (include the version you are using, if applicable):

22D

Code Snippet (add any code snippets that support your topic, if applicable):

{

 "schemas": [

    "urn:scim:schemas:core:2.0:User",

    "urn:scim:schemas:extension:fa:2.0:faUser"

  ],

  "urn:scim:schemas:extension:fa:2.0:faUser": {

    "userCategory": "REST_SCIM_02"

  }

}