Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwD9cWvkW1l0dwpaSQ9WFeWuVQMg3ltZv7+UINiEYcY8zk5XWtRdyeH/Zi2T… (844 chars)"
  }
}