Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwDHZ7qCYpmwSSVvG+rRIweZtlxLd/G1YMHdPgKBJQ28jA9Hs8FRx4tc5KPc… (844 chars)"
  }
}