we need to do POC on it by creating a sample questioner and able to add meta data tags for each question behind scenes. we should able to download data from survey gizmo as JSON format.
SurveyGizmo is able to export data in a variety of formats, but JSON is not one of those, I am sorry to say The supported formats for raw data exports include CSV, XLS, XML, and SPSS.
Regarding meta data tags, I am not entirely sure what you are trying to describe. Would you mind providing an example of what this might look like for a question, and how you would like that to show up in your raw data export?