Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwH7fbvnwGjWoFe+4+Nrx+fnKrAayCUPlUcnE5WFvpZcBG4+VJDlnizF5cCc… (844 chars)"
  }
}