Rule

A rule object defines a simple rule in a complex query that does not form part of a Rule Group ie. in boolean
terms, would not be enclosed in parentheses.

{
    "type": "rule",
    "dimension": "apprenticeship_level",
    "operator": "eq",
    "target": {
        "type": "object",
        "id": 0,
        "name": "string"
    },
    "taxonomy_id": 0
}