curl --request POST \
  --url https://{your-subdomain}.neetodesk.com/api/external/v2/customers \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <x-api-key>' \
  --data '
{
  "customer": {
    "emails": [
      "john@example.com",
      "jane@example.com"
    ],
    "first_name": "John",
    "last_name": "Doe",
    "phones": [
      "+1234567890"
    ],
    "links": [
      "https://github.com/john"
    ],
    "language": "English",
    "time_zone": "Eastern Time (US & Canada)",
    "description": "VIP customer",
    "company_id": "aaaabbbb-cccc-dddd-eeee-ffff00001111"
  }
}
'

{
  "customer": {
    "id": "aaaabbbb-cccc-dddd-eeee-ffff00002222",
    "name": "John Luther",
    "email": "john@example.com"
  }
}