Add a user to the current org

curl --request POST \
  --url https://ctl.prod.nuon.co/v1/orgs/current/user \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "user_id": "<string>"
}'

{
  "created_at": "<string>",
  "created_by": {
    "created_at": "<string>",
    "created_by_id": "<string>",
    "email": "<string>",
    "expires_at": "<string>",
    "id": "<string>",
    "issued_at": "<string>",
    "issuer": "<string>",
    "subject": "<string>",
    "token_type": "auth0",
    "updated_at": "<string>"
  },
  "created_by_id": "<string>",
  "id": "<string>",
  "orgID": "<string>",
  "updated_at": "<string>",
  "userID": "<string>"
}