Instagram Non-Followers

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Instagram Non-Followers",
    "version": "1.2",
    "description": "Find Instagram users who don't follow you back",
    "permissions": [
        "activeTab"
    ],
    "host_permissions": [
        "https:\/\/www.instagram.com\/*"
    ],
    "action": {
        "default_popup": "index.html",
        "default_icon": {
            "18": "icons\/icon18.png",
            "48": "icons\/icon48.png",
            "128": "icons\/icon128.png"
        }
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/www.instagram.com\/*"
            ],
            "js": [
                "contentScript.js"
            ]
        }
    ]
}