public String getAuthorizationHeader(String dataToSign) {
        String authHeather = "Signature keyId=\"" + Config.getApiKey()
                + "\",algorithm=\"hmac-sha256\",headers=\"(request-target) host date\",signature=\""
                + generateAuthHeaderHash(dataToSign) + "\"";

        return authHeather;
    }

    public static String generateAuthHeaderHash(String dataToSign) {
        String hash;
        try {
            Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
            SecretKeySpec secret_key = new SecretKeySpec(Config.getSecret().getBytes(), "HmacSHA256");
            sha256_HMAC.init(secret_key);
            hash = Base64.encodeBase64String(sha256_HMAC.doFinal(dataToSign.getBytes()));
        } catch (Exception e) {
            logger.error(e.getMessage());
            hash = null;
        }
        return hash;
    }

    public String getSkuldGroupId() {
        String gatewayurl = "/v1/";
        String gatewayhost = "rms-world-check-one-api-pilot.thomsonreuters.com";

        Date now = new Date();
        DateFormat df = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.ENGLISH);
        df.setTimeZone(TimeZone.getTimeZone("GMT"));
        String date = df.format(now);

        String dataToSign = "(request-target): get " + gatewayurl + "groups\n" +
                "host: " + gatewayhost + "\n" +
                "date: " + date;

        String authHeader = getAuthorizationHeader(dataToSign);
        ResponseEntity responseEntity = sanctionsRepo.getSkuldGroupId(authHeader);

        return null;
    }