Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCg9GaHI8/JhiZ4JQiPu+OrQc8kPeNP7YfL9E0EBBT2oy1mVd8JGx490Sx3… (844 chars)"
  }
}