Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH1V/AF4GP2AcXyG8+Kxva8g8Q9rIKSbUTcPi/cdeWgG3PdWpPKo8Ey1QkY… (844 chars)"
  }
}