curl --request PUT \
--url https://api.smokeball.com/firm/users/{id} \
--header 'Authorization: <api-key>' \
--header 'Content-Type: application/json-patch+json' \
--header 'x-api-key: <api-key>' \
--data '{
"userId": "b471682e-fa17-4e46-b7fe-9b2b8fdcb3c2",
"staffId": "750eb5c5-ac0b-7d11-4997-e0ce9d8896c8"
}'