Get Vessel Notification Subscriptions

{
    "meta": {
        "limit": 100,
        "offset": 0,
        "request_id": "550e8400-e29b-41d4-a716-446655440000",
        "request_timestamp": "2026-08-12T10:20:00Z",
        "total_count": 1
    },
    "data": [
        {
            "active": true,
            "callback_url_status": "ok",
            "created_at": "2026-08-12T10:15:30Z",
            "created_by": "user@example.com",
            "custom_reference": "FLEET-OPS-2141",
            "subscription_id": "5e98acb5-4b8a-451b-9280-ddd63d55f8c9",
            "last_modified_at": "2026-08-12T10:15:30Z",
            "description": "Zone entry and exit alerts for vessels transiting the Panama Canal",
            "name": "Panama Canal transit watch",
            "settings": {
                "notification_callback_url": "https://webhooks.example.com/event-notifications",
                "imo": "9074729"
            }
        }
    ]
}