So I have a generic question in javascript, cant seem to find the answer for a question i.e. Spring security ACL lets to authorize users at an instance level for example if you have a blog and users are commenting, in spring security ACL particular user (or a role) can be banned from commenting on that particular blog dynamically that means blog owner could make a call to backend via block button or something to block a user or roles. How can such a fine grained authorization be achieved using AWS serverless approach using JavaScript, Lambdas, dynamo db etc. i cant seem to find the design or better an open source example which I can learn from. Javascript or Typescript example would be awesome to learn from as I only these.