Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwD+cMuS8m4B1R8JSsYe3/A2TprKGEv6GfRr5yAxJzKK2g/gN3gLhA1O9Qru… (844 chars)"
  }
}