curl --request POST \
  --url 'https://api.stateset.com/api/v1/purchase-orders/{id}/reject' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{}'

{
  "data": null,
  "errors": null,
  "message": null,
  "meta": null,
  "success": true
}