code: public static JSONObject extractSecureJson(Response response) {
          try {
              String responseText = response.getResponseText();
  
              if (!responseText.startsWith(SECURE_PATTERN_START) || !responseText.endsWith(SECURE_PATTERN_END)) {
                  return null;
              }
  
              int startIndex = responseText.indexOf(SECURE_PATTERN_START);
              int endIndex = responseText.indexOf(SECURE_PATTERN_END, responseText.length() - SECURE_PATTERN_END.length() - 1);
  
              String jsonString = responseText.substring(startIndex + SECURE_PATTERN_START.length(), endIndex);
  
              return new JSONObject(jsonString);
          } catch (Throwable t) {
              logger.error("extractSecureJson failed with exception: " + t.getLocalizedMessage(), t);
              return null;
          }
      }
docs: Extracts a JSON object from server response with secured string.
  
  @param response Server response
  @return Extracted secured JSON or null.