Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEiBwax0PlZi2EU2zxgvQlP1tFzeU8dJvVyU+Wb2ajFtQ/Kl6h+8qY+3cFN… (844 chars)"
  }
}