curl --request PATCH \
  --url https://api.corebill.io/v1/quotes/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "status": "approved",
  "notes": "Client approved via email on 2025-04-20"
}
'

{
  "data": {
    "id": "quo_p1q2r3s4t5u6",
    "quote_number": "QUO-2025-00001-1",
    "customer_id": "cus_a1b2c3d4e5f6",
    "status": "sent",
    "issue_date": "2025-04-01",
    "valid_until": "2025-05-01",
    "total": 11500,
    "currency": "USD",
    "created_at": "2025-04-01T08:00:00.000Z",
    "subtotal": 12000,
    "discount_type": "fixed",
    "discount_value": 500,
    "discount_amount": 500,
    "subtotal_after_discount": 11500,
    "tax_rate": 0,
    "tax_amount": 0,
    "notes": "Valid for 30 days",
    "payment_terms": "50% upfront, 50% on delivery",
    "updated_at": "2025-04-01T08:30:00.000Z",
    "customer": {
      "id": "cus_a1b2c3d4e5f6",
      "name": "John Doe",
      "contact_email": "[email protected]"
    },
    "public_token": "1713182400000-p1q2r3s4t5u6",
    "items": [
      {
        "id": "di_y5z6a7b8c9d0",
        "item_name": "Web Development",
        "quantity": 40,
        "unit_price": 150,
        "subtotal": 6000,
        "total": 6000,
        "sort_order": 0,
        "description": "Full-stack web application development",
        "unit": "hour"
      }
    ]
  }
}