Update util.go

pkg/http-client/util.go

@@ -40,7 +40,7 @@ func toResponse(statusCode int, header interface{}, body []byte) *logResponse {
 	var data interface{}
 	if body != nil {
 		if _err := json.Unmarshal(body, &data); _err != nil {
-			data = body
+			data = string(body)
 		}
 	}
 	return &logResponse{