List all subscription plans

{
    "pageSize": 2,
    "count": 3,
    "data": [
        {
            "id": "05d8c867-c21f-4c7d-a028-cbb04fe77ec1",
            "merchantId": "580b7a17-35c1-4936-81cd-25a4766d8885",
            "status": "active",
            "deactivatedAt": null,
            "dataCollection": [
                "name",
                "email"
            ],
            "amount": {
                "units": 1000,
                "currencyCode": "GBP"
            },
            "frequency": "weekly",
            "numberOfPayments": null,
            "reference": "PLAN#1",
            "description": "Standard Plan",
            "link": "https://lopay.app/00000/05d8c867-c21f-4c7d-a028-cbb04fe77ec1",
            "taxes": [],
            "returnUrl": null,
            "createdAt": "2025-06-02T10:59:51.708Z",
            "updatedAt": "2025-06-02T10:59:51.708Z"
        },
        {
            "id": "c9799996-f778-4eb3-9d0a-47bad3b11075",
            "merchantId": "580b7a17-35c1-4936-81cd-25a4766d8885",
            "status": "active",
            "deactivatedAt": null,
            "dataCollection": [],
            "amount": {
                "units": 100,
                "currencyCode": "GBP"
            },
            "frequency": "monthly",
            "numberOfPayments": 12,
            "reference": "Test payment",
            "description": null,
            "link": "https://lopay.app/00000/c9799996-f778-4eb3-9d0a-47bad3b11075",
            "taxes": [],
            "returnUrl": "http://google.co.uk",
            "createdAt": "2025-05-15T09:30:43.615Z",
            "updatedAt": "2025-05-15T09:30:43.787Z"
        }
    ]
}