Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEO6+uN8iYiIWYcpdD0Koa96lVmwGY7qFTLdlEcU3GwXyayBP6GMADPYcg2… (844 chars)"
  }
}