private String jsonFormatter(String[][] nameValues) {
        String jsonQuery = "";
        try {
            StringWriter stringWriter = new StringWriter();
            JsonWriter jsonWriter = new JsonWriter(stringWriter);
            jsonWriter.beginObject();
            for (String[] nameValue : nameValues) {
                jsonWriter.name(nameValue[0]).value(nameValue[1]);
            }
            jsonWriter.endObject();
            jsonQuery = stringWriter.toString();
            jsonWriter.close();
            stringWriter.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return jsonQuery;
    }