Implementation of https://github.com/w3f/PSPs/blob/master/PSPs/drafts/psp-3.md
$ npx --package @open-web3/[email protected] substrate-asset freeBalance 5FZjj96L7rPeVWsyJj42WLn3QuKrp4dRSsUtTihXP7Px3GVk --types ./acala/acala.types.json --metadata ./acala/aca.json
$ npx --package @open-web3/[email protected] substrate-asset transfer 5FZjj96L7rPeVWsyJj42WLn3QuKrp4dRSsUtTihXP7Px3GVk 10000 --types ./acala/acala.types.json --metadata ./acala/aca. json --seed Alice