curl --request PATCH \
  --url https://{domain}/wp-json/sagescreen/v1/zapier/user/{user_id} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "email_product_updates": true,
  "email_product_marketing": false
}
'

{
  "success": true,
  "data": {
    "user_id": 42,
    "updated": {
      "email_product_updates": true,
      "council_id": "new-council-uuid",
      "role": "council_power_user"
    }
  }
}