Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHGg/S+e6c3+v2p5M/yFUMKVPdjoRuDa3W+oFbV26bQvS6gJcNcAemw5Ffc… (844 chars)"
  }
}