Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGJ57EFk6vpX7tLW0oDDWUP5/SZVmhAvpFKg52oG9wMbGDEWFan8vRc6xWE… (844 chars)"
  }
}