curl --location --request DELETE 'https://api.kucoin.com/api/ua/v2/user/sub-api-key?apiKey=670621e3a25958000159c82f&subName=testapi6&passphrase=11223344'{
"code": "200000",
"data": {
"subName": "testapi6",
"apiKey": "********"
}
}