Examine source code of Hit legendary strong

{
  "manifest_version": 2,
  "name": "Hit legendary strong",
  "version": "1.0",
  "description": "Hit is a legendary assassin from Universe 6, known for his calm demeanor and unmatched combat abilities. With over a thousand years of experience, he has perfected his techniques to eliminate targets with precision and efficiency.",
  "permissions": [
    "theme"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "Hitlegendary@gmail.com",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_personal_data": false,
        "description": "Tiện ích không thu thập hoặc lưu trữ bất kỳ dữ liệu nào của người dùng.",
        "data_types_collected": [],
        "retention": "none",
        "contact": "cuongngoan210393@gmail.com"
      }
    }
  }
}