docs: @SneakyThrows
      public static byte[] verifyJwsSignature(final Key signingKey, final String asString) {
          val jws = new JsonWebSignature();
          jws.setCompactSerialization(asString);
          jws.setKey(signingKey);
  
          val verified = jws.verifySignature();
          if (verified) {
              val payload = jws.getEncodedPayload();
              LOGGER.trace("Successfully decoded value. Result in Base64-encoding is [{}]", payload);
              return EncodingUtils.decodeBase64(payload);
          }
          return null;
      }