Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQCykeND6p3k9nBLxwdyD/ZOKN+fLWJqF3M4b9RAiZrmfDDu4X2EoFitJyBo… (1,748 chars)"
  }
}