While API is in preview, I think it is still important to know what is and isn't supported, for example, Filter Operator of OneOf is not supported, even though the docuemtnation list it as an operator

"operator": {
            "title": "FilterOperator",
            "enum": [
                "Equals",
                "DoesNotEqual",
                "GreaterThan",
                "GreaterThanOrEqualTo",
                "LessThan",
                "LessThanOrEqualTo",
                "OneOf",
                "NotOneOf",
                "Between",
                "NotBetween",
                "BeginsWith",
                "DoesNotBeginWith",
                "Contains",
                "DoesNotContain",
                "Like",
                "NotLike",
                "Blank",
                "NotBlank",
                "Ask",
                "SoundsLike",
                "Any",
                "OneOfEach",
                "NotOneOfEach"
            ],
            "type": "string",
            "description": "The FilterOperator (equal, not equal, etc.)"