In an azure function I’m attempting to update an entity in dynamics:

    public async Task UpdateEmployeeAsync(JObject employee)
    {
        var content = new StringContent(employee.ToString(), Encoding.UTF8, "application/json");
        var response = await _httpClient.PostAsync($"/data/EmployeesV2", content);
        response.EnsureSuccessStatusCode();
    }

I’ve attempted something like this as well:

var response = await _httpClient.PostAsync($"/data/EmployeesV2/{employee["PersonnelNumber"]}", content);

Each time i get an internal server error response.

I’ve attempted the same in Postman, with various types of requests:

PATCH
https://xxxxxxxxxxx.dynamics.com/data/EmployeesV2(PersonnelNumber='100059')
BODY
{
    "FirstName": "xxx",
    "LastName": "xxxx",
    "PrimaryContactEmail": "xxxxxxxx.com",
    "PersonnelNumber": "100059",
    "EmploymentLegalEntityId": "0093",
    "EmploymentStartDate": "2021-09-27T00:00:00-05:00",
    "TitleId": "Chief Executive Officer"
}

The response I’m getting is:

{
    "Message": "No HTTP resource was found that matches the request URI 'https://xxxxxxxxxxxx.dynamics.com/data/EmployeesV2(PersonnelNumber='100059')'. No route data was found for this request."
}

Any idea how to PATCH an EmployeeV2 entity in C#?