curl --request POST \
  --url https://billing.runtools.ai/v1/billing/promo-codes/redeem \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "code": "<string>",
  "orgId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "data": {
    "ok": true,
    "amountCents": 123,
    "code": "<string>",
    "message": "<string>"
  }
}