Examine source code of Cute Lucky Number

{
  "manifest_version": 3,
  "name": "Cute Lucky Number",
  "version": "1.0",
  "description": "Pick a lucky number and win a cute animal-themed prize!",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "r6summerlanhamuamvn38@hotmail.com"
    }
  }
}