Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwBR1X7+3PDTW7KIT5LNKHr/aRQph1ufEQNB8nYzTR1nBHQs/t7A8k/6Rsc8… (844 chars)"
  }
}