Examine source code of Tmsimregistration

{
  "manifest_version": 3,
  "name": "Tmsimregistration",
  "version": "1.0",
  "description": "Our TM users Your ultimate destination for TM SIM guides and information related to Philippine telecom networks ",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{214f04b1-283e-186d-b585-03f96e890e4d}"
    }
  }
}