Display a listing of subscriptions.

{
    "data": {
        "code": "<string>",
        "config_code": "<string>",
        "created_at": "<dateTime>",
        "debit_day": "<integer>",
        "document_type": {
            "config": "<string>",
            "created_at": "<dateTime>",
            "description": "<string>",
            "documents_source": "<string>",
            "program_type": "<string>",
            "status": {
                "action": "showHelp",
                "code": "<integer>",
                "description": "<string>",
                "label": "<string>"
            },
            "title": "<string>",
            "transactions_source": "<string>",
            "type_code": "<string>",
            "updated_at": "<dateTime>"
        },
        "field_1": "<string>",
        "field_2": "<string>",
        "field_3": "<string>",
        "gateway_code": "<string>",
        "id": "<integer>",
        "integrity_code": "<string>",
        "reference_1": "<string>",
        "reference_2": "<string>",
        "start_date": "<dateTime>",
        "status": {
            "action": "showHelp",
            "code": "<integer>",
            "description": "<string>",
            "label": "<string>"
        },
        "updated_at": "<dateTime>",
        "user": {
            "birth_country": "<string>",
            "birthdate": "<dateTime>",
            "code": "<string>",
            "company_id": "<integer>",
            "correlation_id": "<string>",
            "created_at": "<dateTime>",
            "email": "<string>",
            "email_verified_at": "<dateTime>",
            "field_1": "<string>",
            "field_2": "<string>",
            "field_3": "<string>",
            "first_name": "<string>",
            "gender": "Male",
            "id": "<integer>",
            "last_name": "<string>",
            "marital_status": "Widowed",
            "nationality": "<string>",
            "profile_photo_url": "<string>",
            "status": {
                "action": "none",
                "code": "<integer>",
                "description": "<string>",
                "label": "<string>"
            },
            "type": "f",
            "updated_at": "<dateTime>"
        },
        "user_payment_method": {
            "bin": "<string>",
            "code": "<string>",
            "created_at": "<dateTime>",
            "csv": "<string>",
            "due_date": "<string>",
            "entity_code": "<string>",
            "method": "CBU",
            "name": "<string>",
            "number": "<string>",
            "updated_at": "<dateTime>",
            "visible_data": "<string>"
        }
    }
}