История изменений

https://www.qtcentre.org/threads/57397-What-is-the-associate-type-of-QList-lt-QPair-lt-double-QString-gt-gt-in-qml

There is very likely not exactly matching JavaScript type.
In which case you’ll have to find a better way of presenting the data.

QVariantMap - твой бро, судя по форме данных )

https://www.qtcentre.org/threads/57397-What-is-the-associate-type-of-QList-lt-QPair-lt-double-QString-gt-gt-in-qml

There is very likely not exactly matching JavaScript type.
In which case you’ll have to find a better way of presenting the data.