Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwG/bF/H0HOa8AQwtzEZS+2cCQYVnFCB0RQ5XgcXjlP+IWj6C3mSeyiDd2h9… (844 chars)"
  }
}