Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwCYdOIjX/vShWPa0iMJcNX2UBfPs6ACT3XD21mUhcFMD1A79tn8yCp4OC2x… (844 chars)"
  }
}