Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwF2sc/Wk+1ZpQKQFt+MuQVUaI43tOkuFNGu3fHwijs+lnHGakhLkdoM7sAA… (844 chars)"
  }
}