Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHp9n42of8O/Zb0r0uKDo3z2kDfouNgwR6Gb9uF6NZaXkWOxNd6jzf+tA8M… (844 chars)"
  }
}