How to get tradable time of Dota2 items

[zujs]

Hello everyone!
I'm getting inventory through https://steamcommunity.com/inventory/{steamID}/{appID}/{contextID}
and i receive data below
 

{ assets:
   [
     { appid: 570,
       contextid: '2',
       assetid: '18658815551',
       classid: '825180652',
       instanceid: '3861633480',
       amount: '1' } ],
  descriptions:
   [ 
     { appid: 570,
       classid: '825180652',
       instanceid: '3861633480',
       currency: 0,
       background_color: '',
       icon_url:
        '-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KW1Zwwo4NUX4oFJZEHLbXP7g1bJ4Q1lgheXknVSffixc7aXlh6MTtYsIWxIwJfwPLLYzhG0966m5OYmPrLP7TQkmJf7_piifvE8IK7iwXt8kBpNmDzcY-ddlM4Mg3ZqQS_yO_p08Du7ZmdnSQw63Rx4CnZmgv330-knDPovw',
       icon_url_large:
        '-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KW1Zwwo4NUX4oFJZEHLbXP7g1bJ4Q1lgheXknVSffixc7aXlh6MTtYsIWxIwJfwPLLYzhG0966m5OYmPrLP7TQkmJf7_piifvE8ILKhFWmrBZyajugJY6UIwFqYAvQ_Ae7yb_rhZa-vpjNmHsxuih3tyvenRS0iE0YZ_sv26Jnx2ogxA',
       descriptions: [Array],
       tradable: 0,
       name: 'Loading Screen of the Sacrosanct',
       name_color: 'D2D2D2',
       type: 'Uncommon Loading Screen',
       market_name: 'Loading Screen of the Sacrosanct',
       market_hash_name: 'Loading Screen of the Sacrosanct',
       commodity: 0,
       market_tradable_restriction: 7,
       market_marketable_restriction: 0,
       marketable: 1,
       tags: [Array] } ],
  total_inventory_count: 1,
  success: 1,
  rwgrsn: -2 }

you can see "tradable" field is 0 (it mean can't trade at the moment). How to get a timeline to calculate count down time for tradable item.

[Dr. McKay]

It's probably in the descriptions array somewhere.

[zujs]

1 hour ago, Dr. McKay said:

It's probably in the descriptions array somewhere.

Very well, thank you so much!