Hello Thirumala_Reddy, it looks you are actually receiving the JWS. But probably you were expecting to see "JWS Compact Serialization", which looks like this: jws_header.jws_body.jws_signature (all parts Base64 encoded) In your case, the serialization used is "Flattened JWS JSON Serialization". Both serializations are valid according to JWS specification. See https://datatracker.ietf.org/doc/html/rfc7515#section-7.2.2