curl --request GET \
  --url https://api.orafi.app/v1/subscriptions/plans/{planId} \
  --header 'x-api-key: <api-key>'

{
  "success": true,
  "message": "Plan retrieved",
  "data": {
    "id": "plan_abc123",
    "name": "Basic Monthly",
    "amount": 9.99,
    "currency": "USDC",
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "subscriptionCount": 123,
    "subscriptions": [
      {
        "id": "sub_abc123",
        "customerId": "<string>",
        "planId": "<string>",
        "network": "SUI",
        "startsAt": "2023-11-07T05:31:56Z",
        "endsAt": "2023-11-07T05:31:56Z",
        "canceledAt": "2023-11-07T05:31:56Z",
        "createdAt": "2023-11-07T05:31:56Z",
        "updatedAt": "2023-11-07T05:31:56Z",
        "customer": {
          "id": "customer_abc123",
          "firstname": "John",
          "lastname": "Doe",
          "email": "john.doe@example.com",
          "totalSpent": 500.5,
          "createdAt": "2023-11-07T05:31:56Z"
        }
      }
    ]
  }
}