Examine source code of Brume Wallet

{
  "manifest_version": 2,
  "name": "Brume Wallet",
  "description": "The private wallet",
  "version": "0.7.537",
  "browser_action": {},
  "icons": {
    "512": "favicon.png"
  },
  "permissions": [],
  "background": {
    "type": "module",
    "scripts": [
      "service_worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "content_security_policy": "default-src 'self'; base-uri 'self'; object-src 'none'; script-src 'self' 'wasm-unsafe-eval' 'sha256-93+ZD1pnvn2ZeAo2LkCIsgePJ48n2Tv4GQJDt0uyBIo='; img-src 'self' data: blob:; connect-src 'self' data: wss://snowflake.torproject.net;",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2c54a7c6-7fa7-4af6-9751-00104fc06b1e}"
    }
  }
}