Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBnch/nBmDWMaMTmP03pMmSYa7cYs5xGkMikev/3dJuSjkMq+0V0d2xo5dh… (844 chars)"
  }
}