Step 1:
Get contact ID
Fetch the contact ID using a GET call using Postman, sample screenshot.
Step 2:
Create Unique Link for the contact
For example, let's take the first ID:17463626
End Point: https://jayeshurath2222222.surveysparrow.com/v3/channels/create_unique_links
Payload:
{
"survey_id": 278949,
"channel_id": 2723736,
"contact_ids": [
17463626
]}
Now you get the survey link for contact.
Hope this helps.