curl --request POST \
  --url https://api.zet.money/v1/transfer/execute \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "quoteId": "qt_01H8X6...",
  "walletId": "wal_01H8X3...",
  "sourceAddress": "<string>",
  "reference": "transfer_001",
  "callbackUrl": "<string>"
}
'

{
  "success": true,
  "data": {
    "transactionId": "txn_01H8X6...",
    "reference": "transfer_001",
    "transactionHash": "0xabc...",
    "approvalData": {
      "to": "<string>",
      "data": "<string>",
      "value": "<string>"
    },
    "transactionData": {
      "to": "<string>",
      "data": "<string>",
      "value": "<string>",
      "gasLimit": "<string>"
    }
  }
}