curl --location --request GET 'https://applet.linkqh.com/applet/bff/app/home/findMainContractLongShortRatio' \
--header 'secret: N&h74zqRR4*pkNNw'
{
"code": "string",
"date": [
{
"contract": "string",
"contractName": "string",
"longRate": 0,
"shortRate": 0
}
],
"msg": "string"
}