curl --request POST \
  --url 'https://api.stateset.com/api/v1/carts/{id}/complete' \
  --header 'Authorization: Bearer YOUR_API_KEY'

{
  "cart_id": "string",
  "currency": "string",
  "order_id": "string",
  "order_number": "string",
  "payment_id": null,
  "total_charged": "string"
}