curl --request GET \
  --url https://payments.oaknetwork.org/api/v1/subscription/plans \
  --header 'Authorization: Bearer <token>'

{
  "msg": "<string>",
  "data": [
    {
      "hash_id": "<string>",
      "name": "<string>",
      "description": "<string>",
      "frequency": 123,
      "price": 123,
      "overridden_price": 123,
      "is_active": true,
      "start_time": "2023-11-07T05:31:56Z",
      "end_time": "2023-11-07T05:31:56Z",
      "is_auto_renewable": true,
      "currency": "<string>",
      "allow_amount_override": true,
      "campaign_id": "<string>",
      "campaign_name": "<string>",
      "created_by": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ]
}