}

func buildSpan(obj any) Span {
	var s Span
	spanSpec := obj.(map[string]any)
	if spanID, ok := spanSpec["id"]; ok {
		s.SpanID = spanID.(string)
	}
	if parentSpanID, ok := spanSpec["parentId"]; ok {
		s.ParentSpanID = parentSpanID.(string)
	}
	if endpointObj, ok := spanSpec["localEndpoint"]; ok {
		if em, ok := endpointObj.(map[string]any); ok {