{{ assignVar "imageURL" image.data }}
{{ assignVar "imageURL" (join (split (getVar 'imageURL') "https://cdn11.bigcommerce.com/") "") }}
{{ assignVar "imageURL" (join (split (getVar 'imageURL') "?c=1") "") }}
{{ assignVar "imageURL" (join (split (getVar 'imageURL') "{:size}") "original") }}

<img 
    data-src="https://your-sirv-account.sirv.com/{{ getVar 'imageURL' }}"
    class="Sirv{{#if class}} {{class}}{{/if}}" 
    alt="{{lang 'products.card_default_image_alt'}}"
/>