The logs are kept and collected on the Logsign SIEM product, signed by a specific methodology. You can add the e-signature information that you have received from the companies that provide the certificate and e-signature services to change the method of signing the log on the Logsign SIEM product.
By using the Logsign SIEM WEB interface, there will be a few lines where you can change the signing options in the page that opens after clicking Settings > Data Management > Sign Settings tab.
By default, the signing configuration of the Logsign SIEM product is what you see on the screen. If you choose your own e-signature from the File Sign Method section and fill in the required information and click the Save button, Logsign SIEM product will process the according to the type of option that you selected when signing.