chromium/chrome/test/data/extensions/api_test/wasm_mv3/manifest.json

{
  "name": "Hello, WebAssembly!",
  "description": "Verify usage of wasm in MV3",
  "version": "0.1",
  "manifest_version": 3,
  "content_security_policy":{
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "background": {
    "service_worker": "service_worker.js",
    "type": "module"
  }
}