Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH5HCDAiVPKkbCk/1hYQxaEG2+5S/Fn+Y7o7Z7qnbUVhC+LXY8baEde8f5P… (844 chars)"
  }
}