Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBmSpI/Eq4STWEbKhPQBq0u0a8KX3K7GlA7mQPzI3Z6Bgt4jHh6Z8BdEGH+… (844 chars)"
  }
}