   {:media/id "book2"
    :media/type :media.type/book
    :media/title "book2_title"
+   :media/subtitle "book2_subtitle"
    :media/isbn "ISBN 978-5-98227-708-4"
    :media/essential true
    :media/experience 1

  {:media/id "book3"
   :media/type :media.type/book
   :media/title "book3_title"
   :media/essential true
   :media/experience 2
   :media/author [[:author/id "author1"] [:author/id "author2"] [:author/id "author3"]]}
  {:media/id "book4"
   :media/type :media.type/book
   :media/title "book4_title"
   :media/essential false
   :media/experience 3
   :media/author [[:author/id "author1"] [:author/id "author2"] [:author/id "author3"]]}
  {:media/id "book5"
   :media/type :media.type/book
   :media/title "book5_title"
   :media/essential false
   :media/experience 0
   :media/author [[:author/id "author1"] [:author/id "author2"] [:author/id "author3"]]}
  {:media/id "book6"
   :media/type :media.type/book
   :media/title "book6_title"
   :media/essential false
   :media/experience 0
   :media/author [[:author/id "author1"] [:author/id "author2"] [:author/id "author3"]]}
  {:media/id "book7"
   :media/type :media.type/book
   :media/title "book7_title"
   :media/essential false
   :media/experience 0}
  {:media/id "book8"
   :media/type :media.type/book
   :media/title "book8_title"
   :media/essential false
   :media/experience 3}
  {:media/id "book9"
   :media/type :media.type/book
   :media/title "book9_title"
   :media/essential false
   :media/experience 2}
  {:media/id "book10"
   :media/type :media.type/book
   :media/title "book10_title"
   :media/essential false
   :media/experience 1}
  {:media/id "book11"
   :media/type :media.type/book
   :media/title "book11_title"
   :media/essential false
   :media/experience 1}
  {:media/id "book12"
   :media/type :media.type/book
   :media/title "книга12_название"
   :media/locale :ru
   :media/essential false
   :media/experience 0}
  {:media/id "book13"
   :media/type :media.type/book
   :media/title "книга13_название"
   :media/locale :ru
   :media/essential false
   :media/experience 0}
  {:media/id "book14"
   :media/type :media.type/book
   :media/title "libro_14_nombre"
   :media/locale :es
   :media/essential false
   :media/experience 0}
  {:media/id "book15"
   :media/type :media.type/book
   :media/title "libro_15_nombre"
   :media/locale :es
   :media/essential false
   :media/experience 0}]

 [{:media/id "book1"
   :media/type :media.type/book
   :media/title "book1_title"
   :media/subtitle "book1_subtitle"
   :media/isbn "ISBN 978-5-9775-0294-8"
   :media/essential true
   :media/experience 0
