{"error":"822: unexpected token at '{{n   "variant": {{n     "id": 42369826515,n     "inventory_management": "shopify",n     "inventory_quantity":1n   }}n}}n'"}

request.AddParameter("undefined", "{{n   "variant": {{n     "id": " + variant_id + ",n     "inventory_management": "shopify",n     "inventory_quantity":" + STOCK_ON_HAND + "n   }}n}}n", ParameterType.RequestBody);
            IRestResponse response = client.Execute(request);
            Debug.WriteLine(response.Content);