Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQB+PCSa2GhFsbCTf3kECeHBfMiiNw6PU1I7EJnPPCkbJlzvBALw3F+3f20H… (1,748 chars)"
  }
}