How can I verify the ‘EmailId’ value in respose body using Frisby API. I want to check as “EmailId”: “[email protected]” in api response body

I want to check as key value pair “EmailId”: “[email protected]” in api response body. Below is my respose of api and I need to check value of EmailID and Recipient name as key value pair. I have verified the status as .expect('json', 'Result.Status', 2) but it is not working for recipient name as .expect('json', 'Result.Recipients.RecipientName', 'Test User'). Currently I am using .expect('bodyContains', '[email protected]') for verifying email id.

JSON: {
            "IsRequestSuccessful": true,
            "Error": null,
            "Result": {
                "Status": 2,
                "CompletedTimestamp": null,
                "Recipients": [
                    {
                        "RecipientId": "28660b54-641d-4fec-9841-721d34c175c7",
                        "RecipientName": "Test User",
                        "EmailId": "[email protected]",
                        "ContactType": 2,
                        "Status": 2,
                    }
                ]
            }
        }