大佬们帮忙看看这个接口怎么弄？

post： https://api.qst8.cn/api/front/upload/img 请求标头:authority: api.qst8.cn :method: POST :path: /api/front/upload/img :scheme: https Accept: */* Accept-Encoding: gzip, deflate, br, zstd Accept-Language: zh-CN,zh;q=0.9 Branchid: 1002 Cache-Control: no-cache Channel: Content-Length: 2066189 Content-Type: multipart/form-data; boundary=—-WebKitFormBoundarywIB4fkxKvaM69fwp Method: POST Origin: https://qst8.cn Pragma: no-cache Referer: https://qst8.cn/ Sec-Ch-Ua: “Google Chrome”;v=”123″, “Not:A-Brand”;v=”8″, “Chromium”;v=”123″ Sec-Ch-Ua-Mobile: ?0 Sec-Ch-Ua-Platform: “Windows” Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-site Sign: bc167104aa367377609e9b64da7d396b Source: h5 Tenantid: 3 Timestamp: 1712394675371 Token: 531cd244-5f7e-4fd7-5532-1f539052d71a User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 载荷file: （二进制） file: 返回的数据格式{     “code”: 200,     “message”: “操作成功”,     “data”: “https://img.qst8.cn/custom/pic/xxx.png” } 请求标头里的sign值和token值是怎么生成的，怎么对这个接口进行正确的post？ 希望大佬们能教一下，谢谢了。