SimulateExternalTransferRequest

{
    "from_account": {
        "name": "Banco Externo S.A.",
        "bank_code": "BANCO001"
    },
    "to_account_id": "4f5a2d7a-4c1e-4f2a-9e9a-1234567890ab",
    "amount": "10000.00",
    "currency": "CLP",
    "reference": "REF-TRANSFER-001",
    "description": "Transferencia de prueba desde sistema externo"
}