Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHKVIziFoGuTmBxUaHBOEEdDbgXmqu9sYpTk5A7t49Bh0LmKKMZjB+H50Kl… (844 chars)"
  }
}