Examine source code of Umango Embedded App Manager

{
  "manifest_version" : 3 ,
  "name" : "Umango Embedded App Manager",
  "version" : "1.0.3",
  "description" : "Manage and deploy Umango embedded applications across your network devices.",
  "browser_specific_settings": {
    "gecko": {
      "id": "deployer@umango.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons" : {
    "16" : "icons/icon16.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "permissions" : [
    "storage" ,
    "tabs" 
  ],
  "host_permissions" : [
    "https://*.umango.com/*" 
  ],
  "optional_host_permissions" : [
    "http://*/*" ,
    "https://*/*" 
  ],
  "background" : {
    "scripts" : [
      "background/index.js" 
    ],
    "type" : "module" 
  },
  "content_scripts" : [
    {
      "matches" : [
        "http://*/*" ,
        "https://*/*" 
      ],
      "js" : [
        "content/bridge.js" 
      ],
      "run_at" : "document_idle" 
    }
  ],
  "action" : {
    "default_popup" : "popup/popup.html",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "48" : "icons/icon48.png"
    }
  }
}