Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwF4aG8mX/iRNsYCHN4pD3Us/ByxlSMB2oK4Jiq+99MmcXLGkUKcphp5P2EY… (844 chars)"
  }
}