keystone/api-ref/source/v3/samples/admin/endpoint-update-response.json

{
    "endpoint": {
        "id": "828384",
        "interface": "internal",
        "links": {
            "self": "http://example.com/identity/v3/endpoints/828384"
        },
        "region_id": "north",
        "service_id": "686766",
        "url": "http://example.com/identity/v3/endpoints/828384"
    }
}