curl --request POST \
  --url https://{tenant}/admin/organisations/{orgID}/generate-portals \
  --header 'Admin-Auth: <api-key>' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data domain=tyk.io

{
  "Message": "Org updated",
  "Meta": null,
  "Status": "OK"
}