Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBguk/w2PrwiwT7FfAtTzRiSeFzRtc07/Kl2uR8H+x8TlvXmLHA1ht7SzDH… (844 chars)"
  }
}