Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHg1EjN8aWF9FDM3enh+k9n1yFvshHJBZD4Zg9I/F5Y6S2Olej0Slp4d2Vp… (844 chars)"
  }
}