Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHFW/AkPPsSNgP3UgTMOvtF/0SGEHQhWKPf9Skw4iOlmRQKPXrzniFR2ibp… (844 chars)"
  }
}