Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGOCt/d4Z1JBxRFIvbdwEu/jNvztCLxYXiPM9HUIaMD0nCvVv3Q/4B9w2EZ… (844 chars)"
  }
}