How to style tooltip_data content

I have a DataTable, which has tooltip on one of the columns. Each cell from that column needs to have a tooltip relevant to its record, so I am using the tooltip_data parameter. It works, but I can’t figure out how to style the tooltip content. I tried adding a tooltip parameter as well in order to specify that its type should be ‘markdown’, but it gets ignored: tooltip={'type': 'markdown'}, tooltip_data=[...]