Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwF0wUQDKPDPg8nNP0FAUGpVUJFTLlQN7ElNevNUxqu4cHoRw1O4Cj6mD/TM… (844 chars)"
  }
}