Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCfR6ff2d4kDdgrkS/4PqSWkUv07dkshTCqCMB1PUJulwBfKo9rRxz7Syx3… (844 chars)"
  }
}