Test account private key 5JBLNgtSSBAzsq6bXkqpDyNn64kmp6nDepyM798a2dZLdyHThbf. Please don't empty it.
It's better to use GUI but if you want to use console you can do as below:
wallet_dice "<account_name>" 100 2 true
Roll dice using account 100 JDS and payout as 2, roll high.
wallet_account_dice_transaction_history to view the result.