{
"symbol": "XBTUSDTM",
"leverage": "80"
}curl --location --request POST 'https://api.kucoin.com/api/ua/v1//account/modify-leverage' \
--header 'Content-Type: application/json' \
--data-raw '{
"symbol": "XBTUSDTM",
"leverage": "80"
}'{
"code": "200000",
"data": null
}