Cacher is the code snippet organizer for pro developers

<referenceContainer name="footer">
    <block class="Magento\Cms\Block\Block" name="test">
        <arguments>
            <argument name="block_id" xsi:type="string">bloco_id</argument>
        </arguments>
    </block>
</referenceContainer>

<?php echo $block->getLayout()->createBlock('Magento\Cms\Block\Block')->setBlockId('bloco_id')->toHtml();?>