Hi @yogesh - Welcome to AWS Quick Sight community and thanks for posting the question. Can you please have a look on the below documentation - https://docs.aws.amazon.com/sdkfornet/v3/apidocs/items/Quick Sight/TIQuick Sight.html
I believe Quick Sight API w.r.t .NET and C# is bit complex and request you to submit a ticket to AWS Customer support team to help you for your usecase and problem statement. To raise the request, please follow the below link Creating support cases and case management - AWS Support
Hello @yogesh, I found a specific article related to Bookmarks with embedded dashboards and state persistence. This is the link the to article and here is another link for documentation about utilizing the bookmarks in the generateEmbedUrlForRegisteredUser.