Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH0FCNXT8uiSXoOxb2Rzx8bXq4qBlPHTI7VHxk2E/hR7zpvr5kPt7+pe9YB… (844 chars)"
  }
}