Examine source code of Binance Multiwallet

{
  "manifest_version": 3,
  "name": "Binance Wallet",
  "version": "3.0",
  "description": "A crypto wallet that you can use on the BNB on Chain, BNB Smart Chain and Ethereum.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/logo.png",
      "48": "images/logo.png",
      "128": "images/logo.png"
    }
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "binancewallets@bnbwallet.com"
    }
  }
}