curl --request POST \
  --url https://upay-sistema-api.onrender.com/api/v1/transactions \
  --header 'API-Key: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "product": "<string>",
  "amountCents": 50000000,
  "clientName": "<string>",
  "clientEmail": "jsmith@example.com",
  "clientDocument": "<string>",
  "clientPhone": "<string>",
  "paymentMethod": "PIX",
  "paymentLinkId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "installments": 6,
  "dueDate": "2023-11-07T05:31:56Z",
  "metadata": {},
  "trackingParams": {
    "utm_source": "<string>",
    "utm_medium": "<string>",
    "utm_campaign": "<string>",
    "utm_content": "<string>",
    "utm_term": "<string>",
    "src": "<string>",
    "sck": "<string>"
  },
  "postbackUrl": "<string>"
}
'

{
  "message": "<string>",
  "transaction": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "displayId": "<string>",
    "product": "<string>",
    "amountCents": 123,
    "status": "<string>",
    "paymentMethod": "<string>",
    "client": {},
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "trackingParams": {}
  }
}