Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE13G3tjPU/3P1rb9dbNr3QLF2hj/L/tfCBcWbJoQrv1XIXRWP7wg7V2kC1… (844 chars)"
  }
}