Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQDRcUzOg/qMdVzhFDMHVb7HsFffTrI7Zlbc0BjvNF9s3gzaL+lKDlF52mXJ… (1,748 chars)"
  }
}