Feat/ethereum from json #8

Job	Run time
cargo-fmt	11s
clippy	2m 2s
cargo-doc	49s
build (ubuntu-latest, stable)	32s
build-wasm (ubuntu-latest, stable)	38s
build (ubuntu-latest, nightly)	43s
build-wasm (ubuntu-latest, nightly)	50s
build (macos-latest, stable)	46s
build-wasm (macos-latest, stable)	50s
build (macos-latest, nightly)	56s
build-wasm (macos-latest, nightly)	1m 27s
integration-tests (ubuntu-latest, stable)	3m 7s
unit-tests (ubuntu-latest, stable)	3m 4s
integration-tests (ubuntu-latest, nightly)	3m 6s
unit-tests (ubuntu-latest, nightly)	2m 54s
unit-tests (macos-latest, stable)	2m 50s
unit-tests (macos-latest, nightly)	3m 10s
	27m 55s

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