curl --request GET \
  --url https://vpos.payven.com.tr/api/v1/checkout/sessions/{sessionId} \
  --header 'Authorization: Bearer <token>'

{
  "message": "<string>",
  "isSuccess": true,
  "code": "<string>",
  "data": {
    "sessionId": "<string>",
    "tenantId": "<string>",
    "merchantId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "externalMerchantId": "<string>",
    "merchantName": "<string>",
    "amount": 123,
    "currency": "<string>",
    "allowedInstallments": [
      123
    ],
    "description": "<string>",
    "externalId": "<string>",
    "basketId": "<string>",
    "customerEmail": "<string>",
    "customerPhone": "<string>",
    "metadata": {},
    "status": "<string>",
    "transactionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "createdAt": "2023-11-07T05:31:56Z",
    "expiresAt": "2023-11-07T05:31:56Z",
    "paymentMode": "Non3D",
    "allowPreAuth": true,
    "isTestSession": true,
    "attemptCount": 123,
    "maxAttempts": 123,
    "successUrl": "<string>",
    "cancelUrl": "<string>"
  }
}