Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQBnelFa9ggfTbpr/hhqEqIDzeHYAZAeyuB1FZuHLYgvfyz2JBmCEY4wpuN+… (1,748 chars)"
  }
}