Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGUOQ/msPmgUwAABDYpLEgPtrO8bQmKwZ7Wl9mDHvA9dTmMGPfj5yR3u6Qp… (844 chars)"
  }
}