Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGcDSLu/lAa7sCB7XkDu517P3jeFbNkCNMPFhK95+gk+lVlgZHX8oAp7wu1… (844 chars)"
  }
}