Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEbbNRT3CcchY6Vk6MHkljwIi/4Zly3sIOA3B6j4YxNZkFiQbOEHcIbAynZ… (844 chars)"
  }
}