Search MIM Service via the Lithnet MIM Rest API and PowerShell. Assoicated Blog https://blog.darrenjrobinson.com/getting-started-with-the-lithnet-rest-api-for-the-microsoft-identity-manager-service/

Search Lithnet MIM Rest API.ps1

# Creds
$Username = "domain\user"
$Password = 'P@$$w0rd123'
$site_auth = "$($Username):$($Password)"

# Encode for Basic Authorization       
$site_Bytes = [System.Text.Encoding]::utf8.GetBytes($site_auth)
$Site_EncodedAuth=[Convert]::ToBase64String($site_Bytes)

# Server URI
$uri = "https://mimdev.mydomain.com/v2/resources/"

# Search Query. Get all Person Objects
$objType = '?objectType=Person'

# Handle Self Sign Cert
add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy

# Search
$response = Invoke-WebRequest -Uri ($uri+$objType) -Method Get -Headers @{Authorization = "Basic $Site_EncodedAuth"} -ContentType "application/json"

$users = $response.Content | ConvertFrom-Json
$users.Results