REQ: 
{
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              "unit_amount_decimal": "4191"
            },
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            "subscription": "sub_1SRPp1HrIm3tRwvjcBe0qmE0",
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        ],
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        "url": "/v1/subscription_items?subscription=sub_1SRPp1HrIm3tRwvjcBe0qmE0"
      },
      "latest_invoice": "in_1SRPp1HrIm3tRwvjNmUI4N8h",
      "livemode": true,
      "metadata": {},
      "next_pending_invoice_item_invoice": null,
      "on_behalf_of": null,
      "pause_collection": null,
      "payment_settings": {
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        "payment_method_types": [
          "card"
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      "status": "incomplete",
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      "transfer_data": null,
      "trial_end": null,
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  "livemode": true,
  "pending_webhooks": 3,
  "request": {
    "id": "req_joTVKX1Zyie8jB",
    "idempotency_key": "4d0c89cf-c83c-4228-82c0-931181787c82"
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  "type": "customer.subscription.created"
}
REQ: