Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH8W2HL4zojzC1eTCiDI/o8KXBWDbBUjjXU5EcbU+2c6EJ2ZseTf4yeHryf… (844 chars)"
  }
}