Examine source code of pd mafia sender

{
  "manifest_version": 3,
  "name": "pd mafia sender",
  "version": "1.1",
  "description": "Парсер болдов для pd mafia",
  "permissions": [
    "tabs",
    "activeTab",
    "scripting",
    "storage",
    "contextMenus",
    "contentSettings",
    "background"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chirk0ff.one@gamil.com"
    }
  },
  "host_permissions": [
    "https://prodota.ru/*"
  ],
  "icons": {
    "16": "logo.png",
    "32": "logo.png",
    "48": "logo.png",
    "128": "logo.png"
  },
  "action": {
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://prodota.ru/*"
      ],
      "js": [
        "index.js"
      ]
    }
  ]
}