Post organization department user

curl --request POST \
  --url http://127.0.0.1:3000/api/organization/{organizationId}/department-user \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "departmentIds": [
    "<string>"
  ],
  "userIds": [
    "<string>"
  ]
}
'