curl --location --request POST 'https://api.kucoin.com/api/ua/v1/user/sub/create-sub-account' \
--header 'Content-Type: application/json' \
--data-raw '{
"password": "q1234567",
"access": "Spot",
"subName": "subNameTest10",
"remarks": "TheRemark"
}'{
"code": "200000",
"data": {
"uid": 255748387,
"subName": "subNameTest10",
"remarks": "TheRemark",
"access": "Spot"
}
}