Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHv6Kpx/1fUcqZ8OWWJySoRsXz3m5Mdm+iUKX3ZazTX8zYUfDvA/1/9Bi5Z… (844 chars)"
  }
}