It is because I am lazy, and working with JWT (JWS and JWE) is somewhat challenging.
Just create a ClearEnvelop
reader
use Envelopes\Sealers\ClearEnvelop;
$envelop = new ClearEnvelop();
$envelop->setIssuer('Alice')
->setAudience('Bob')
->setExpireIn(60) // Expire in next 60 seconds
->setJWTID(time());
echo $envelop->seal(); // Seal up the envelop and done!