{
"buy_currency": "string",
"sell_currency": "string",
"value_date": "string"
}curl --location --request POST 'https://sandbox-gateway.pingpongx.com/v1/fx/trade/forward/rate/price' \
--header 'access_token;' \
--header 'Content-Type: application/json' \
--data-raw '{
"buy_currency": "string",
"sell_currency": "string",
"value_date": "string"
}'{
"code": 400,
"message": "卖出货币缺失"
}