AddTradeModel

{
    "portfolioId": 123,
    "symbol": "VAS",
    "exchange": "ASX",
    "tradeDate": "2023-04-25",
    "tradeType": "Buy",
    "quantity": "23",
    "price": "104.23",
    "brokerage": "9.95",
    "brokerageCurrencyCode": "AUD",
    "exchangeRate": "1.234",
    "notes": "string",
    "externalTradeId": "BRK-TXN-123456789"
}