I am using the following request to extract orgid via name search using DSS REST API. 
What is the identifier type do I need to use to retrieve "Entity PermID" instead of "OrgId".

{
    "SearchRequest": {
        "Name": "Infosys",
        "OfficialNameOnly": false,
        "DomicileCodes": null,
        "CountryOfIncorporationCodes": null,
        "TrBusinessClassificationCodes": null,
        "VerifiedOnly": false,
        "RegulatedOnly": false,
        "IssuersOnly": false,
        "ActiveOnly": false,
        "IdentifierType": "OrgId",
    }
}