Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGKkUnbolLI4HrH0dR+xAWYEDr4hZZ+Zx/bVuGPQGnDPVydjHSR5YghT/yv… (844 chars)"
  }
}