{{chargebeeDomain}}/api/v2/estimates/create_subscription_for_items?subscription_items[item_price_id][0]={{itemPriceId}}

gistfile1.txt

{
    "estimate": {
        "created_at": 1705672766,
        "object": "estimate",
        "subscription_estimate": {
            "status": "active",
            "next_billing_at": 1708351166,
            "object": "subscription_estimate",
            "currency_code": "USD"
        },
        "invoice_estimate": {
            "recurring": true,
            "date": 1705672766,
            "price_type": "tax_exclusive",
            "sub_total": 0,
            "total": 0,
            "credits_applied": 0,
            "amount_paid": 0,
            "amount_due": 0,
            "object": "invoice_estimate",
            "customer_id": "AzyhEsU1oj6Jn3Ve",
            "line_items": [
                {
                    "id": "li_AzyhEsU1oj6LW3Vg",
                    "date_from": 1705672766,
                    "date_to": 1708351166,
                    "unit_amount": 0,
                    "quantity": 1,
                    "amount": 0,
                    "pricing_model": "flat_fee",
                    "is_taxed": false,
                    "tax_amount": 0,
                    "object": "line_item",
                    "customer_id": "AzyhEsU1oj6Jn3Ve",
                    "description": "basic fee waived",
                    "entity_type": "plan_item_price",
                    "entity_id": "basic-fee-waived-USD-Monthly",
                    "discount_amount": 0,
                    "item_level_discount_amount": 0
                }
            ],
            "taxes": [],
            "line_item_taxes": [],
            "currency_code": "USD",
            "round_off_amount": 0,
            "line_item_discounts": []
        }
    }
}