Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEkXtOY9d7IHcfX9N6qwikz3Qd9bkqCmJiOZE93+8nX2n1oYkrvbN29PtPg… (844 chars)"
  }
}