Examine source code of Trust Wallet

{
  "manifest_version": 3,
  "name": "Trust",
  "version": "1.1.3",
  "description": "Shows dapps prices in your browser.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon48.png"
  },
  "icons": {
    "48": "icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "TRTV3@outlook.com"
    }
  }
}