Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGi4eTCNGWb1hPAn+WMHisvt6EKBNkdsGRnpKPRV3e+BS37szpUIVlcX6Zr… (844 chars)"
  }
}