curl -i -X POST \
  'https://leadgen.grinfi.io/leads/api/file-imports/{uuid}/import-companies' \
  -H 'Authorization: Bearer <YOUR_JWT_HERE>' \
  -H 'Content-Type: application/json' \
  -d '{
    "columns": [
      {
        "source": "name",
        "target": "name"
      },
      {
        "source": "domain",
        "target": "domain"
      }
    ]
  }'