schema.json

{
  "definitions": {
    "Filter": {
      "title": "Filter",
      "type": "object",
      "properties": {
        "filter": {
          "type": "object",
          "properties": {
            "type": {
              "type": "string",
              "enum": [
                "all",
                "any",
                "none"
              ]
            },
            "conditions": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "column": {
                    "type": "string"
                  },
                  "comparator": {
                    "type": "string"
                  },
                  "type": {
                    "type": "string",
                    "enum": [
                      "boolean",
                      "text",
                      "date",
                      "datetime",
                      "number"
                    ]
                  },
                  "value": {
                    "type": "string"
                  }
                }
              }
            },
            "sub_filters": {
              "type": "array",
              "required": false,
              "items": {
                "$ref": "#/definitions/Filter"
              }
            }
          }
        }
      }
    }
  },
  "$ref": "#/definitions/Filter"
}