rahulkalyanwat - I would need more to go on to help ensure I have it right, but Has Next will be something similar to the following:
Has Next: ($entity.startCount + $entity.limit) < $entity.totalCount
I can't help with the Next URL without more information on the API such as any other query parameters you are using and what the pagination parameters are (skip/offset/page, limit/take, etc.)
PS - sorry it took a while for me to respond... I was on vacation. I recommend that you open a new thread rather than replying to a post with secondary questions. This can help ensure more community members see your question and will be likely to respond.
Hope this helps!