Examine source code of Rumble Downloader

{
  "action": {
    "default_popup": "popup/payment.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rd@sprise.ltd"
    }
  },
  "content_scripts": [
    {
      "js": [
        "content/content.js"
      ],
      "matches": [
        "https://rumble.com/*"
      ]
    }
  ],
  "description": "Rumble Downloader downloads videos from Rumble",
  "host_permissions": [
    "https://rumble.com/*",
    "https://sprise-api.xyz/*"
  ],
  "icons": {
    "16": "assets/logo.png",
    "48": "assets/logo.png",
    "128": "assets/logo.png"
  },
  "background": {
    "scripts": [
      "service.js"
    ]
  },
  "manifest_version": 3,
  "name": "Rumble Downloader",
  "permissions": [
    "storage",
    "downloads"
  ],
  "version": "1.0"
}