add log

Author: rogermiretin2

src/main/java/es/in2/vcverifier/service/impl/JWTServiceImpl.java

@@ -161,6 +161,7 @@ private String generateJWTInternal(String payload, JOSEObjectType type) {
             JWSSigner signer = new ECDSASigner(ecJWK);
             jwt.sign(signer);
             log.info("JWT generated and signed successfully");
+            log.debug("jwt, {}", jwt.serialize());
             return jwt.serialize();
         } catch (JOSEException e) {
             log.error("JWTServiceImpl -- generateJWT -- Error during JWT creation", e);