curl https://api.tradly.app/v1/memberships/:membership_id/contributions \
  -H "Authorization: Bearer YOUR_PUBLISHABLE_OR_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -X POST \
  -d '{
  "listing_id": 42,
  "order_id": 2001
}'

{
  "status": true,
  "data": {
    "contribution": {
      "id": 5,
      "tenant_id": 100,
      "membership_id": 1,
      "order_id": 2001,
      "order_detail_id": 3001,
      "price_log_id": 3,
      "amount": "50.000000",
      "currency_id": 1,
      "unit_price": "50.000000",
      "units_credited": "1.000000",
      "unit_name": "credit",
      "metadata": {},
      "created_at": "2026-09-25T10:00:00.000Z"
    }
  }
}