Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwAh51PL1FP6/mCMRCIu1Ufcbl5oNobNq+l4ZwHgsZ21VXL7y2xQWM5fwwBG… (844 chars)"
  }
}