Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQBdwZhfDg44s6+blbzpyPBJ5JBt3Lq2xsQTN0sPOq9qA2Pt0+IStnmq1zXB… (1,748 chars)"
  }
}