文件转换，提示签名问题。求助，wps-2的加密方式在哪里出现了错误

调用接口：https://solution.wps.cn/api/developer/v1/office/convert/to/png 接口调用后提示错误内容： {"code":30003,"message":"InvalidSignature","hint":"signature not match. expect: ba92703be9e26cc95a0da44068f43fdfe723a0b4, actual: 57848d780dbbba707fc1edaae18ae1c9130e9ecb","extra":""}

sh1加密前字段（已经脱敏）：wpxxxxxxxxxxxxxxxx82d7154a0945bd9ee8755d668b57afc2application/jsonWed, 27 Sep 2023 08:03:41 GMT

md5数据的加密原始数据（已经脱敏）：{"url":"http://xxxxx/file/admin/uploadDir/2023-09-26/xxxx.ppt","filename":"xxxx.ppt"}

Md5计算算法：

  public static String getMd5(String value) throws NoSuchAlgorithmException {

        System.out.println(value);
        MessageDigest md = MessageDigest.getInstance("MD5");

        // 计算消息的摘要
        byte[] digest = md.digest(value.getBytes());

        // 将摘要转换为十六进制字符串
        String hexString = bytesToHex(digest);

        System.out.println(hexString);

        return hexString;
    }

    public static String bytesToHex(byte[] bytes) {
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }
        return hexString.toString();
    }

求助，具体哪个步骤配置错误，才造成加密数据不一致？