1/ "Title" - Required
2/ "Description" - Optional
3/ "shipping_profile_id" - Required - shipping profiles described below
4/ "price"
7/ "photo_1" - Optional
8/ "photo_2" - Optional
9/ "photo_3" - Optional
10/ "photo_4" - Optional
11/ "photo_5" - Optional
12/quantity (Optional 1 by default)