Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwE4uNWNX7Z2y5s7XVrScUYV/dzepTCN6XEyUp6VnO6W9CcRt+8N16f2v1QK… (844 chars)"
  }
}