Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQAjMaicRKrbx3v3o4/YQIRrQr2e/w+e+PuYM3/Iys2uR2x1LWTTRhjvw9rJ… (1,748 chars)"
  }
}