curl --request PUT \
  --url https://apiv2.example.com/users/{userId} \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "name": "John Doe",
  "email": "john.doe@example.com",
  "msisdn": "+15551234567",
  "metadata": {}
}
'

{
  "userId": "<string>",
  "name": "<string>",
  "email": "jsmith@example.com",
  "msisdn": "<string>",
  "identity": "<string>",
  "referenceId": "hr-employee-98765",
  "customers": [
    {
      "customerId": "<string>",
      "name": "<string>"
    }
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "metadata": {}
}