Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwG6XNFvbslc+Ckwm2G44l07T+wK7dtzf4PGeMYCR9qkH1jPO4Yf7eYT+Ov7… (844 chars)"
  }
}