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This content applies to WaaS 1.0 only. We highly recommend that you upgrade to WaaS 2.0.
Cobo Smart Account is a simple smart contract wallet for storing digital assets and sending transactions. The Account Address of a Cobo Smart Account will be the address of the underlying smart contract. Cobo Smart Account sends transactions using call and delegatecall as follows: 
contract CoboSmartAccount is BaseAccount {
    /// @dev Perform a call directly from the contract itself.
    function _executeTransaction(
        TransactionData memory transaction
    ) internal override returns (TransactionResult memory result) {
        address to = transaction.to;
        uint256 value = transaction.value;
        bytes memory data = transaction.data;
        if (transaction.flag.isDelegateCall()) {
            // Ignore value here as we are doing delegatecall.
            (result.success, result.data) = address(to).delegatecall(data);
        } else {
            (result.success, result.data) = address(to).call{value: value}(data);
        }
    }

    /// @dev The contract itself.
    function _getAccountAddress() internal view override returns (address account) {
        return (address(this));
    }
}
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