curl --request POST \
  --url https://your-instance.example.com/api/contact/map-excess-data \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "sourceText": "<string>",
  "existingSchema": {},
  "mappedData": {},
  "excessData": {}
}
'

{}