Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQCew/AovM3iIL6NW9zgDrSzUSwFiDXqZ0sTDS1dGMEL2E6/a4GYsbXvGJx8… (1,748 chars)"
  }
}