{
    "sendMeEmails": { "one_of": [0, 1] },
    "address": {"nested_object": {
        "city": "required",
        "street": "required"  
    }},
    "zipCode": "required",

    "required_if_1": {"required_if": {"sendMeEmails": 2}},
    "required_if_2": {"required_if": {"address/city": "Kyiv"}},
    "required_if_3": {"required_if": {"zipCode": "98754"}},
    "required_if_4": {"required_if": {"noSuchField": "something"}},
    "required_if_5": {"required_if": {"users/3/address/city": "Kyiv"}},

    "empty_field": "required_if"
}