Modify App Client
PATCH {{auth_backend_server}}/app-clients/{{AppClientID}}
Request Body
{"data"=>{"type"=>"auth/app-clients", "attributes"=>{"type"=>"machine_to_machine", "name"=>"{{AppClientName}}", "userType"=>"builder"}, "relationships"=>{"auth/roles"=>{"data"=>{"type"=>"auth/roles", "id"=>"abe9baeb-c171-494c-9e3b-6fef27ef4214"}}}}}