curl -i -X POST \
  https://developer.sprinklr.com/_mock/apis/sprinklr-v3/case/merge \
  -H 'Authorization: Bearer <YOUR_Token_HERE>' \
  -H 'Content-Type: application/json' \
  -H 'Key: YOUR_API_KEY_HERE' \
  -d '{
    "parentCaseNumber": 0,
    "childCaseNumbers": [
      0
    ]
  }'