A sample Contentful content type schema.

test.json

{
  "name": "Country",
  "description": "",
  "displayField": "name",
  "fields": [
    {
      "id": "name",
      "name": "Name",
      "type": "Symbol",
      "localized": true,
      "required": true,
      "validations": [
        {
          "unique": true
        }
      ],
      "disabled": false,
      "omitted": false
    },
    {
      "id": "code",
      "name": "Code",
      "type": "Symbol",
      "localized": false,
      "required": true,
      "validations": [
        {
          "unique": true
        },
        {
          "size": {
            "min": 2,
            "max": 2
          }
        }
      ],
      "disabled": false,
      "omitted": false
    },
    {
      "id": "catalog",
      "name": "Catalog",
      "type": "Link",
      "localized": false,
      "required": true,
      "validations": [
        {
          "linkContentType": [
            "catalog"
          ]
        }
      ],
      "disabled": false,
      "omitted": false,
      "linkType": "Entry"
    },
    {
      "id": "marketId",
      "name": "Market ID",
      "type": "Symbol",
      "localized": false,
      "required": false,
      "validations": [],
      "disabled": false,
      "omitted": false
    },
    {
      "id": "image",
      "name": "Image",
      "type": "Link",
      "localized": false,
      "required": false,
      "validations": [
        {
          "linkMimetypeGroup": [
            "image"
          ]
        },
        {
          "assetFileSize": {
            "min": null,
            "max": 5242880
          }
        }
      ],
      "disabled": false,
      "omitted": false,
      "linkType": "Asset"
    },
    {
      "id": "defaultLocale",
      "name": "Default Locale",
      "type": "Symbol",
      "localized": false,
      "required": false,
      "validations": [],
      "disabled": false,
      "omitted": false
    },
    {
      "id": "domain",
      "name": "Domain",
      "type": "Symbol",
      "localized": false,
      "required": false,
      "validations": [],
      "disabled": false,
      "omitted": false
    }
  ],
  "sys": {
    "space": {
      "sys": {
        "type": "Link",
        "linkType": "Space",
        "id": "5u4unghxyppg"
      }
    },
    "id": "country",
    "type": "ContentType",
    "createdAt": "2023-05-16T10:59:47.471Z",
    "updatedAt": "2023-07-09T12:58:24.548Z",
    "environment": {
      "sys": {
        "id": "master",
        "type": "Link",
        "linkType": "Environment"
      }
    },
    "publishedVersion": 3,
    "publishedAt": "2023-07-09T12:58:24.548Z",
    "firstPublishedAt": "2023-05-16T10:59:56.903Z",
    "createdBy": {
      "sys": {
        "type": "Link",
        "linkType": "User",
        "id": "3fNf373wzrxwX2fOXTqubM"
      }
    },
    "updatedBy": {
      "sys": {
        "type": "Link",
        "linkType": "User",
        "id": "3fNf373wzrxwX2fOXTqubM"
      }
    },
    "publishedCounter": 2,
    "version": 4,
    "publishedBy": {
      "sys": {
        "type": "Link",
        "linkType": "User",
        "id": "3fNf373wzrxwX2fOXTqubM"
      }
    }
  }
}