var content = new StringContent("<Entities><Entity>" +
                                            $"<EntityTypeId>{entitySearchGroupId}</EntityTypeId>" +
                                            $"<Identifier><![CDATA[{name}]]></Identifier>" +
                                            $"<Description><![CDATA[{description}]]></Description>" +
                                            "<Km></Km><Colour></Colour><Radiocode></Radiocode>" + // todo Legacy. To be removed server side