Parse different types of objects from Json

I'm trying to save player's inventory as a Json data, but I'm having a problem. I have a class Sword which extends abstract class Weapon which extends another abstract class Item. This is what Json file looks like with Sword and Armor object in it: `

 [
     {
         "category": {
             "type": "Weapon",
             "subtype": "Sword"
         },
         "id": 0,
         "value": 1,
         "name": "Wooden Sword",
         "description": "Sword made out of wood",
         "slug": "wooden_sword",
         "stats": {
             "wear": 100,
             "damage": 5
         }
     },
     {
         "category": {
             "type": "Armor",
             "subtype": "Helmet"
         },
         "id": 1337,
         "value": 1,
         "name": "Steel Helmet",
         "description": "Whatever...",
         "slug": "steel_helmet",
         "stats": {
             "wear": 100,
             "defence": 5,
             "vitality": 3,
             "dexterity": -1
         }
     }
 ]

How can I possibly parse these objects into their respective C# objects?