curl -L -X GET 'https://apis.roblox.com/cloud/v2/users/{user}/inventory-items?maxPageSize=10&pageToken={string}&filter={string}' \
  -H 'x-api-key: {your-api-key}'

{
  "inventoryItems": [
    {
      "path": "users/123/inventory-items/some-inventory-item-id",
      "assetDetails": {
        "assetId": "12928981934",
        "inventoryItemAssetType": "INVENTORY_ITEM_ASSET_TYPE_UNSPECIFIED",
        "instanceId": "173413781720",
        "collectibleDetails": {
          "itemId": "521cca19-75bb-4e05-a0af-633b1532c24d",
          "instanceId": "a8a27d38-ee51-4cf4-8b0a-485d0dfd8607",
          "instanceState": "COLLECTIBLE_ITEM_INSTANCE_STATE_UNSPECIFIED",
          "serialNumber": 160
        }
      }
    }
  ],
  "nextPageToken": "string"
}