The requested data is correct maybe there is some issue with the API, if you want to update the existing contact then you can use this API as well, it will update the contact on the basis of VID and you can get VID from email using this API.
The requested data is correct maybe there is some issue with the API, if you want to update the existing contact then you can use this API as well, it will update the contact on the basis of VID and you can get VID from email using this API.