curl --request POST \
  --url https://api.headlesscommerce.io/v1/storefront/payments/confirm \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "payment_key": "<string>",
  "order_id": "<string>",
  "amount": 123,
  "provider": "tosspayments"
}
'

{
  "success": true,
  "order_id": "<string>"
}