Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQGrn59lkjZz+mxWu5ohpjEoJZlB0yNH9cbylfecLRrbJkfSy5MwcA171xF+… (1,748 chars)"
  }
}