Folder Structure

|v Document_name.oca |- Document_name.oca |v Layer_name_1 |- Layer_name_1_00000.png |- Layer_name_1_00110.png |- Layer_name_1_00112.png |- Layer_name_1_00114.png |- Layer_name_1_00200.png |v Group_name_2 |v Layer_name_3 |- Layer_name_3_00000.png |- Layer_name_3_00003.png |> Layer_name_4 |> Layer_name_5 |> Group_name_6

Note that the .oca file at the root could also use the extension .json