{
"symbol": "XBTUSDTM",
"leverage": "15"
}curl --location --request POST 'https://api-futures.kucoin.com/api/v2/copy-trade/futures/changeCrossUserLeverage' \
--header 'Content-Type: application/json' \
--data-raw '{
"symbol": "XBTUSDTM",
"leverage": "15"
}'{
"code": "200000",
"data": true
}