Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAGDQDwq7JXHODj4w4J9v+G7floZrsyt7/1OdQf9MR9BBwLz15nMr+8O8k51I3+… (1,748 chars)"
  }
}