Examine source code of WebPass

{
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAt1A4AbhP866AqJrPzN2XcIUgJobTGTx+Q/IjDzh2DFs6K5Sow9Zb7PJejZ/SmhiqZVZpRGqV3K4Ax1rE1wTfXtOEb6HzaZ0iREqBGcQTs4C5tP97nXscWRiAt9fTIZ5kbHU8M3Ue8Vba76XRFyXP4xgn0kALw5ajoofx2VGBMnyOD3nbo7utHkl8j7Xdd7GO5kR4RO16X9kovvRZFdwZHFa7T+W2XGD6RscFoqOe/gWiAa1yZs/lWIs7DmBlVjSxZYM+2Jy7Qlm2BlBt0Ag4mBVwrzKLSzqZp/EO++SpBweMsdGFq9S7zzA2sYWyBpP7AxXalGn7H3Xo2offDwm3lQIDAQAB",
  "manifest_version": 2,
  "name": "WebPass",
  "description": "Web Extensions for zx2c4's pass",
  "version": "0.2resigned1",
  "applications": {
    "gecko": {
      "id": "webpass@itimmer.nl",
      "strict_min_version": "50.0"
    }
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+L"
      }
    }
  },
  "permissions": [
    "activeTab",
    "nativeMessaging"
  ]
}