Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE2wt6jkK0QQDpnr/zHotVONXOgEfhL5isiY4CoRaHfFk9E/vIXJ9K0ZKZx… (844 chars)"
  }
}