private String getSegmentedStartUploadParams(String filePath) throws IOException {
        File file = new File(filePath);
        SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.sssZZZZZ");
        Calendar cal = Calendar.getInstance();
        cal.set(1900, Calendar.JANUARY, 1);
        long lowerLimit = cal.getTimeInMillis();
        BasicFileAttributes attributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class, LinkOption.NOFOLLOW_LINKS);
        String modifiedOn = dateFormatter.format(attributes.lastModifiedTime().toMillis());
        String createdOn = dateFormatter.format(attributes.creationTime().toMillis());

        int timeZoneOffset = TimeZone.getDefault().getRawOffset() / (1000 * 3600);
        return "{" +
                "\"name\":\"" + file.getName() + "\"," +
                "\"byteCount\":" + file.length() + "," +
                "\"createdOn\":\"" + createdOn + "\"," +
                "\"modifiedOn\":\"" + modifiedOn + "\", " +
                "\"timeZoneOffset\":" + timeZoneOffset +
                "}";
    }