curl --request GET \
  --url https://app.ezzydoc.com/EzzyService.svc/Rest/getWorkflowPair

{
  "service_status": {
    "invoice_id": 123,
    "message": "<string>"
  },
  "setting": {
    "state": 123,
    "keywords": {
      "name": "<string>",
      "value": "<string>",
      "hint": "<string>"
    }
  }
}