curl --request POST \
  --url https://vpos.payven.com.tr/api/v1/checkout/sessions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json; ver=1.0' \
  --data '
{
  "merchantName": "<string>",
  "amount": 123,
  "currency": "<string>",
  "allowedInstallments": [
    123
  ],
  "description": "<string>",
  "externalId": "<string>",
  "basketId": "<string>",
  "customerEmail": "<string>",
  "customerPhone": "<string>",
  "metadata": {},
  "paymentMode": "Non3D",
  "allowPreAuth": true,
  "isTestSession": true,
  "successUrl": "<string>",
  "cancelUrl": "<string>"
}
'

{
  "message": "<string>",
  "isSuccess": true,
  "code": "<string>",
  "data": {
    "sessionId": "<string>",
    "checkoutUrl": "<string>",
    "expiresAt": "2023-11-07T05:31:56Z"
  }
}