Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQF5emIvp8ehFjKd9NdDQBOw6Gi8Fm/6+ADTvMmQu4ln+VKMvppvz1ga723+… (1,748 chars)"
  }
}