core__image__custom-link-class.json

[
    {
        "clientId": "_clientId_0",
        "name": "core/image",
        "isValid": true,
        "attributes": {
            "url": "https://cldup.com/uuUqE_dXzy.jpg",
            "alt": "",
            "caption": "",
            "href": "https://wordpress.org/",
			"linkDestination": "custom",
			"linkClass": "custom-link"
        },
        "innerBlocks": [],
        "originalContent": "<figure class=\"wp-block-image\"><a class=\"custom-link\" href=\"https://wordpress.org/\"><img src=\"https://cldup.com/uuUqE_dXzy.jpg\" alt=\"\" /></a></figure>"
    }
]