curl --request POST \
  --url https://sandbox.finhub.cloud/api/v2.1/fincard/virtual/card/v2/unfreeze \
  --header 'Content-Type: application/json' \
  --header 'X-Forwarded-From: <x-forwarded-from>' \
  --data '
{
  "cardId": "<string>",
  "merchantOrderNo": "<string>",
  "remark": "<string>"
}
'

{
  "success": true,
  "code": 200,
  "msg": "Success",
  "data": {
    "cardId": "card-12345678",
    "operationType": "FREEZE",
    "operationStatus": "COMPLETED",
    "transactionId": "tx-12345678",
    "operationTime": 1640995200000,
    "newCardStatus": "FROZEN",
    "previousCardStatus": "ACTIVE",
    "reason": "Customer request"
  }
}