curl --request POST \
  --url https://api.joinworth.com/auth/api/v1/customers/{customerID}/users \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "jsmith@example.com",
  "mobile": "<string>",
  "subrole": {
    "id": "<string>",
    "code": "<string>",
    "label": "<string>"
  }
}'

{
  "status": "success",
  "message": "Customer user created.",
  "data": {
    "user_id": "053cfb4b-2073-4ede-afc0-26579bb3e1b8"
  }
}