Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwELhkghN5IrhgijqrhzfY3V+d4zGDIi/gm4xjLIq8NnKQ6XAjBJh4P/gcu9… (844 chars)"
  }
}