Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQBWz4Ajcvi6EuA7gNNu73abB/pZfhJJkqw0PeeMZ1Qk2FjQReZQrjntjjB+… (1,748 chars)"
  }
}