curl --request POST \
  --url https://api.hubapi.com/crm/v3/objects/contacts/gdpr-delete \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "objectId": "<string>",
  "idProperty": "<string>"
}
'

This response has no body data.