Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCkjLDT7fPxkXvvDuqI+IQDCjEtOHp7GXGUxt3q4VuvFAXlx5W2EO8cO3dh… (844 chars)"
  }
}