Examine source code of OnlineSIM Access

{
  "name": "onlinesim-access",
  "description": "OnlineSim Access Connection",
  "version": "1.2.3",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_title": "onlinesim-access-connector",
    "default_popup": "pages/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{aa1f8cc6-93db-4c7b-9b8b-553a2f2a2c4e}"
    }
  },
  "permissions": [
    "*://on.test/*",
    "*://onlinesim.io/*",
    "*://scrapi.on-mail.ru/*",
    "*://*.w3.org/*",
    "activeTab",
    "tabs",
    "proxy",
    "browsingData",
    "webRequest",
    "webRequestBlocking",
    "storage"
  ]
}