Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwAB5sNTa3nO3TJxbN+BV7ZGQ5ljX1LZKEGHzcEXVedYqTmAta3mqYjcmAHG… (844 chars)"
  }
}