Store/Save Authenticated user info in keycloak db after authentication

Question

I'm new to keycloak I have created custom SPI for authenticating users, i want to save user info in keycloak db after successful authentication.

I have gone through the documentation and there I found that using this interface org.keycloak.storage.user.UserRegistrationProvider we can register new user, In my case I need to update user info in keycloak db after user is authenticated.

Here's my code

public void authenticate(AuthenticationFlowContext context) {
 
 boolean  isValidToken= false;
            try {
                isValidToken = validateToken(jwsObject, context.getAuthenticatorConfig());
                 } catch (Exception e) {
                log.info("validate Token error",e);
                context.attempted();
            }
            
            if (username != null) {
                    UserModel user = KeycloakModelUtils.findUserByNameOrEmail(session,
                            session.getContext().getRealm(), username);

                    if (user == null) {
                        log.info("No user with provided username");
                        context.attempted();
                    } else if (!user.isEnabled()) {
                        log.info("User is disabled");
                        context.attempted();
                    } else {
                        log.info("Successfully authenticated the user");
                        
            // here i want to save some info in Keycloak fb
                        
                        context.setUser(user);
                        context.success();
                    }
                }
 }

please suggest or refer some code or material that can help in saving info in keycloak db