schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "example_schema",
  "description": "Some demo structure for demoing.",
  "type": "object",
  "additionalProperties": false,
  "required": ["fruits", "vegetables", "multidimensionals"],
  "properties": {
    "fruits": {
      "type": "array",
      "maxItems": 16,
      "description": "Fruits to buy.",
      "items": {
        "type": "string",
        "maxLength": 19,
        "description": "Names of the fruits"
      }
    },
    "vegetables": {
      "type": "array",
      "maxItems": 16,
      "description": "Vegetables to buy.",
      "items": {
          "type": "object",
          "required": [ "name", "is_good" ],
          "additionalProperties": false,
          "properties": {
            "name": {
              "type": "string",
              "description": "The name of the vegetable.",
          "maxLength": 8
            },
            "is_good": {
              "type": "boolean",
              "description": "Is the vegetable any good?"
            }
          }
        }
    },
    "multidimensionals": {
      "type": "array",
      "maxItems": 5,
      "description": "A demo field for multidimensional arrays",
      "items": {
          "type": "array",
          "maxItems": 7,
          "items": {
              "type": "array",
              "maxItems": 9,
              "items": {
                  "type": "integer",
                  "description": "The innermost numeric data"
              }
          }
      }
    }
  }
}