Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGgJ2AoDVlR8OriSA48OtBJnInf5j8rzPFR7Gqy5cCs6jVZqIFGEkN6Z8vp… (844 chars)"
  }
}