public String generatePdf(String id, JSONObject data, String userEmail, String userFirstName, String userLastName) {

        PageProperties pageProperties = new PageProperties(pearsonLogo,headingFont, userFirstName, userLastName);
        try {
            Document document = new Document(PageSize.A4, Constants.PdfProperties.MARGIN_LEFT, Constants.PdfProperties.MARGIN_RIGHT, Constants.PdfProperties.MARGIN_TOP, Constants.PdfProperties.MARGIN_BOTTOM);

            BaseFont pFont = BaseFont.createFont(documentFont,"CP1251", BaseFont.EMBEDDED);
            Font font = new Font(pFont);
            Font pearsonMessageFont = new Font(pFont);
            pearsonMessageFont.setStyle(Font.BOLD);
            pearsonMessageFont.setSize(Constants.PdfProperties.FONTSIZE_SMALL);

            String stringValue = data.toString();
            Object objectValue = mapper.readValue(stringValue, Object.class);
            String prettyString = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(objectValue);
            String pdfContent = prettyString.replaceAll("\\\\n", "\n")
                                            .replaceAll("[-+.^,{}()\"\'\\[\\]]","")
                                            .replaceAll("( {1,}\\r\n){1,}","\n");

            PdfWriter pdfwriter = PdfWriter.getInstance(document, new FileOutputStream(id + Constants.EXTENTION_PDF));
            pdfwriter.setPageEvent(pageProperties);
            document.open();
            document.add(new Paragraph(" "));
            String disclaimer = String.format(Constants.DISCLAIMER,dateFormat.format(date), userEmail);
            Paragraph pearsonMessage = new Paragraph(disclaimer,pearsonMessageFont);
            pearsonMessage.setAlignment(Element.ALIGN_JUSTIFIED);
            pearsonMessage.setIndentationLeft(Constants.PdfProperties.PARAGRAPH_INDENTATION_LEFT);
            pearsonMessage.setIndentationRight(Constants.PdfProperties.PARAGRAPH_INDENTATION_RIGHT);
            pageProperties.setActive(true);
            document.add(pearsonMessage);
            pageProperties.setActive(false);
            document.add(new Paragraph(pdfContent, font));
            document.close();
            FileInputStream inputPdf = new FileInputStream(id + Constants.EXTENTION_PDF);
            return awsS3Service.uploadFile(inputPdf, id);
        }catch (IOException | DocumentException ex) {
            LOGGER.error("Exception on Pdf generation - { }", ex);
            throw new PdfGenerationException("Pdf Generation Failed");
        }
    }