Previously I made a learning-project json2web (probably not the offical way of doing things but if it works...):
<https://github.com/some-avail/json2web> But since Jester is low-maintained i have created a sort of migration-project (thanks to guzba, ThomasTJdev and others) which could be of some interest: <https://github.com/some-avail/json2mummy>