curl --request POST \
  --url https://api.example.com/api/users \
  --header 'Content-Type: application/json' \
  --data '
{
  "externalId": "<string>",
  "space": "production"
}
'

{
  "id": "<string>",
  "externalId": "<string>",
  "createdAt": "2023-12-25",
  "updatedAt": "2023-12-25",
  "createdBy": "<string>",
  "space": "production",
  "token": "<string>"
}