Can be used to add an identifier to the client from an external system, must be unique
Any of:
{ "id": "string", "external_id": "string", "external_origin": "string", "name": "string", "shortcode": "string", "segment": "A", "updated_at": "2019-08-24T14:15:22Z", "created_at": "2019-08-24T14:15:22Z", "primary_contact": { "id": "string", "first_name": "string", "last_name": "string", "email": "string", "type": "user", "space": { … } }, "projects": [ { … } ], "origin_space": { "id": "string", "name": "string" } }