curl --request POST \
  --url https://gateway.3xpay.co/transaction/cash-in \
  --header 'Content-Type: application/json' \
  --header 'api_key: <api-key>' \
  --header 'api_secret: <api-key>' \
  --data '{
  "transaction": {
    "amount": 123,
    "callback_url": "<string>",
    "external_id": "<string>",
    "expiration": 3600,
    "custom_message": "Pix para o pedido 123456",
    "debtor": {
      "name": "João da Silva",
      "document": "12345678901"
    }
  }
}'

{
  "status": "PENDING",
  "payment": {
    "status": "PENDING",
    "transaction_id": "W5qrXoQ6Me5kfw1mEaTsn9lizo",
    "payment_code": "<string>",
    "link": "<string>",
    "total": 123
  },
  "transaction_id": "756afe09-0471-4124-9f35-6691fa130f5b"
}