Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwByS3sB5UWeVX6oQ4zjO7jqZcfrQf45f6Lyd7Hy/oepSEwV+ks6M8zDuWE1… (844 chars)"
  }
}