Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwB8fya/WMI8OIuBHOJQfapUEcV9N+3zs0gFBU/vK6QnkR04YQ2rKGJy3yiv… (844 chars)"
  }
}