Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwI9C3wAc8B7H22M83Wm5A31+P3RkeUkbUNjEnhe1HH5ygMfNOD9pLXu1Yru… (844 chars)"
  }
}