Manage accounts, list all existing accounts, import a private key into a new
account, create a new account or update an existing account.
Keys are stored under <DATADIR>/keystore.
It is safe to transfer the entire directory or the individual keys therein
between klay nodes by simply copying.
Make sure you backup your keys regularly.
ken account command [command options] [arguments...]
list Print summary of existing accounts
update Update an existing account
import Import a private key into a new account