Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFWA/E5nlf8mOxGLQ4gfOE8b1B05nfwHSNJ5v3VtwUdgz+T8rSIaVi9Njj3… (844 chars)"
  }
}