curl --location --request GET 'https://applet.linkqh.com/applet/bff/basis/findFreePriceDayDiff?contract01&contract02&months' \
--header 'secret: N&h74zqRR4*pkNNw'
{
"code": "string",
"date": {
"dateList": [
{}
],
"datetimeList": [
"2019-08-24T14:15:22Z"
],
"ma20List": [
0
],
"priceDiffList": [
0
]
},
"msg": "string"
}