Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEqo0EwLqA4xY6QZnqMTP5DZeBmF/8w6LbRTzMSZ9Y2qUjkOcCU8K7ELH0/… (844 chars)"
  }
}