Init signing key:
$ cargo r --example create_signing_key
Publish script:
$ cargo r --example publish_js sample.js
$ curl localhost:8888/get_signing_public_key
$ curl localhost:8888/list_js
$ curl localhost:8888/get_js/30dfa248a807d35820416228c09b983a940f75247eb0cfdfc03ed12e92f58ba6
$ curl -X POST -H 'Content-Type: application/json' \
--data '{"method": "getName"}' \
localhost:8888/call_js/30dfa248a807d35820416228c09b983a940f75247eb0cfdfc03ed12e92f58ba6
--data '{"method": "getName"}' can be replaced by: --data-binary @file.json