title: WSO2 identity server user customization
body: <p>We are currently looking to use the WSO2 identity server for SSO via SAML2. Everything is working fine but we need to add custom attributes to the user profile and i don't find any documentation about it. We plan to use a JDBC store (mysql). From what, I have found on the web, it seems to be possible but I have not found any documentation on how to do it.</p>
  
  <p>Thanks</p>