Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEVBLcLRTtyfKAEJvzBVQvEOUTj8irVgNBKZGqq/wNEAE4YxV5gZP4VUMao… (844 chars)"
  }
}