Can I Decode JWT token?

JWTs can be either signed, encrypted or both. If a token is signed, but not encrypted, everyone can read its contents , but when you don’t know the private key, you can’t change it. Otherwise, the receiver will notice that the signature won’t match anymore.

To request an access token, send a POST request containing the JWT to the DocuSign authentication service . Must be urn:ietf:params:oauth:grant-type:jwt-bearer . The encoded value of the JWT that you created in the previous step. If successful, an access token will be returned in the response body.

Retrieve a JWT Access Token Using the Auth REST Call