nodes:
  - kind: block
    type: ol_list
    nodes:
      - kind: block
        type: list_item
        nodes:
          - kind: block
            type: paragraph
            nodes:
              - kind: text
                text: Item 1
          - kind: block
            type: ol_list
            nodes:
              - kind: block
                type: list_item
                nodes:
                  - kind: block
                    type: paragraph
                    key: '_selection_key'
                    nodes:
                      - kind: text
                        text: Item 1.1 # split here "It|em 1.1"
                  - kind: block
                    type: ol_list
                    nodes:
                      - kind: block
                        type: list_item
                        nodes:
                          - kind: block
                            type: paragraph
                            nodes:
                              - kind: text
                                text: Item 1.1.1
                      - kind: block
                        type: list_item
                        nodes:
                          - kind: block
                            type: paragraph
                            nodes:
                              - kind: text
                                text: Item 1.1.2