Not able to send BLOB data from XSJS in form of JSON.

I have base64 data stored in my HANA table.

I need to send this data in form of JSON using XSJS.

I retrieve the base64 string from my database and construct an object as

as a key- value pair.

1. If I add this object directly to the response like $.response.setBody(object), it gives error saying that you cannot add complex objects. Convert it to string and then add.

2. If I try to stringify the object like $.response.setBody(JSON.stringify(object)), it shows empty key like     { "Pic" : {} }.

3. If I directly add the base64 string to the response body like $.response.setBody(base64String), it works. But i need in form of JSON

Can anyone help me with that??