Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCW1Qj3J4WAYi83lf8DRhRbcaDSaA7fZOy/p8Z1sqzn+2Jd7250+nfh02JN… (844 chars)"
  }
}