Examine source code of GOVI - meavisa

{
  "manifest_version": 2,
  "name": "GOVI - meavisa",
  "version": "0.8",
  "description": "Extensão para notificação de novos chamados no Govi",
  "homepage_url": "https://git.serpro/12215369744/govi-meavisa",
  "content_scripts": [
    {
      "matches": [
        "https://www.sccd.serpro/*",
        "https://www.sccdtk.serpro/*",
        "https://login.serpro.gov.br/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "notifications"
  ],
  "icons": {
    "16": "images/logo-16.png",
    "32": "images/logo-32.png",
    "48": "images/logo-48.png",
    "128": "images/logo-128.png"
  }
}