Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwAnuGVwPKxlHLsy6/zA0Jd/mZvDZsG/OCMbcr+6mQ8hAWEBpxM9tj6aiCU+… (844 chars)"
  }
}