curl --location --request GET 'https://api-futures.kucoin.com/api/v1/copy-trade/futures/get-max-open-size?symbol&price&leverage'{
"code": "200000",
"data": {
"symbol": "XBTUSDTM",
"maxBuyOpenSize": "1000000",
"maxSellOpenSize": "51"
}
}