Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHl0nAqfBEaOLnRHqjTNSnC/tFGGG5gD3dF+AOcYfKZ6yTnqPGPpO6B9jvp… (844 chars)"
  }
}