Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFzJqz6OA6Hp+gx+Tay63IcvN8ILiEQbYqkOcsNhRu4h16jzCiZkXLdZ8C4… (844 chars)"
  }
}