@Harpreet Sangar just including the schemas for the collections below for the referenced fields

**show schema
        {
            "facet": false,
            "index": true,
            "infix": false,
            "locale": "",
            "name": "title",
            "optional": false,
            "sort": false,
            "stem": false,
            "store": true,
            "type": "string"
        },

**performance schema
        {
            "async_reference": false,
            "facet": false,
            "index": true,
            "infix": false,
            "locale": "",
            "name": "show",
            "optional": false,
            "reference": "shows.title",
            "sort": false,
            "stem": false,
            "store": true,
            "type": "string"
        }