curl --request GET \
  --url https://saas.pads365.com/rdx/NDS.Services.Credentials/api/v1/credentials/app-registration/{appRegistrationId}

{
  "Succeeded": true,
  "Message": "<string>",
  "Code": "<string>",
  "AppRegistration": {
    "Id": "<string>",
    "Name": "<string>",
    "Type": "<string>",
    "ClientId": "<string>",
    "ClientSecret": "<string>",
    "Provider": "<string>",
    "SmtpConfig": {
      "TenantId": "<string>",
      "RedirectUri": "<string>"
    }
  }
}