Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwADyWLlGGLgIgcI/QwRQVc7UtEL5FmsABGqJiA/2iIrUV+PM2kjIaP7CQI/… (844 chars)"
  }
}