curl --request POST \
  --url https://api.customeros.ai/customerbase/v1/contacts/import \
  --header 'Content-Type: multipart/form-data'

{
  "details": {
    "description": "<string>",
    "value": "<string>"
  },
  "requestId": "1234567890abcdef",
  "status": "success",
  "summary": {
    "failed": 123,
    "success": 123,
    "total": 123
  }
}