Filter for Content Items that have any tag in a tagbox "Events" assigned.

{
    "kind": "NestedFilter",
    "path": "detailInformation.eventDetails.events",
    "filter": {
        "kind": "ExistsFilter",
        "field": "detailInformation.eventDetails.events"
    }
}

• Exists check if there is a value existing.
• The nested filter is needed for multi tagboxes (tagboxes with multiple values).