Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEU5T5NtIzci9ZWmLQm3iiRg0bUPLhIArcFQrFsiNWr61ZeE/qU0kkKvzPC… (844 chars)"
  }
}