curl --request POST \
  --url https://saas.pads365.com/rdx/NDS.Services.Authentication/api/v1/ExternalAuthenticationProvider/Save \
  --header 'Content-Type: application/json' \
  --data '{}'

{
  "Succeeded": true,
  "Message": "<string>",
  "Code": "<string>",
  "ExternalAuthenticationProviderId": "<string>"
}