Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHb7VCIIc20nT6LT8SvQr0n5pUPM8Q5CtojpU/LE0oAQCGRvk4FNADRK4Vd… (844 chars)"
  }
}