Akash,
Paulo pointed you in the right direction, providing a link to the documentation that explains what your problem was. This forum is not meant to provide you with ready solutions, only to help you a step further with whatever problem you are having.
As Paulo wrote, you are trying to call a DocuSign action without providing the right authentication key. You first need to retrieve the authentication key using the GenerateXDocuSignAuthenticationKey action, as Paulo wrote.