我确定 sign 没错，md5(时间戳+appkey),时间戳
但总是 401,
使用 X-LC-Key 是可以正常请求的
--> GET https://xbtc.api.lwjlol.com/1.1/classes/_User?where=%7B%22username%22%3A%2213027722276%40163.com%22%7D
X-LC-Id: kFIKTNFdL73Pp3kgzmWro8GN-gzGzoHsz
X-LC-Sign: 0906b0ba400efe0d5235175c6ba596e5,1591672403816
Content-Type: application/json
--> END GET
<-- 401 https://xbtc.api.lwjlol.com/1.1/classes/_User?where=%7B%22username%22%3A%2213027722276%40163.com%22%7D (2247ms)
server: openresty
date: Tue, 09 Jun 2020 03:13:29 GMT
content-type: application/json;charset=utf-8
x-request-biztype: unknown
cache-control: no-cache,no-store
pragma: no-cache
{"code":401,"error":"Unauthorized."}
<-- END HTTP (36-byte body)
