Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE8jBXgp4C73OEo6kBgKCU9duq9TfZn5FtsKN5cYgA3aHEjWH+5lrIrk1DB… (844 chars)"
  }
}