curl --request GET \
  --url https://api.piriod.com/plans/ \
  --header 'Authorization: <api-key>' \
  --header 'x-simple-workspace: <x-simple-workspace>'

{
  "count": 142,
  "results": [
    {
      "product": "<string>",
      "name": "<string>",
      "description": "<string>",
      "frequency": "<string>",
      "currency": "<string>",
      "amount": 123,
      "id": "<string>",
      "sku": "<string>",
      "exempt": false,
      "usage_scheme": "licensed",
      "usage_aggregation": "last_record",
      "tiers_mode": "package",
      "tiers": [
        {
          "amount": 123,
          "quantity_from": 123,
          "amount_scheme": "flat",
          "quantity_to": 123,
          "unit_scheme": "all_units"
        }
      ],
      "unit_label": "<string>",
      "status": "active",
      "archived": "2023-11-07T05:31:56Z",
      "created": "2023-11-07T05:31:56Z",
      "updated": "2023-11-07T05:31:56Z"
    }
  ],
  "next": "<string>",
  "previous": "<string>"
}