curl --request POST \
  --url https://sdk-api.playcamp.io/v1/server/coupons/redeem \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "couponCode": "<string>",
  "userId": "<string>",
  "gameUserUuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "callbackId": "<string>",
  "isTest": false
}
'

{
  "data": {
    "success": true,
    "usageId": 123,
    "couponCode": "<string>",
    "userId": "<string>",
    "packageId": 123,
    "itemName": {},
    "quantity": 123,
    "creatorKey": "<string>",
    "redeemedAt": "2023-11-07T05:31:56Z",
    "errorCode": "<string>",
    "errorMessage": "<string>"
  }
}