Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwKKb7Q8KlE8vp3hk7hKSUSNuXSM1pCBRMYXpeG4bcpSIW6sYUo7ZAepGbi/… (844 chars)"
  }
}