Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGUiCT5+fSa3o3PkNpu5JCDz7VW8BG94UjdNbaJGYYDNBW4zgkiuwDd3ZWz… (844 chars)"
  }
}