Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE844yNgAiD1JOgw9a6b2zCzBCv9aRwja4mcTufRw/2AQfpjP+2rrVzaQAX… (844 chars)"
  }
}