curl --request POST \
  --url http://localhost:3000/api/v1/customers \
  --header 'Content-Type: application/json' \
  --data '
{
  "firstName": "<string>",
  "lastName": "<string>",
  "email": "<string>",
  "phone": "<string>",
  "dateOfBirth": "2023-12-25",
  "gender": "<string>",
  "identityType": "<string>",
  "identityNumber": "<string>",
  "address": {
    "street": "<string>",
    "unit": "<string>",
    "city": "<string>",
    "state": "<string>",
    "postalCode": "<string>",
    "country": "<string>"
  }
}
'