curl --request GET \
  --url https://api.embedreach.com/api/segments/{id}/users

{
  "success": true,
  "message": "<string>",
  "data": {
    "users": [
      {
        "id": "<string>",
        "firstName": "<string>",
        "lastName": "<string>",
        "email": "<string>",
        "phone": "<string>",
        "emailOptOut": true,
        "phoneOptOut": true,
        "externalId": "<string>"
      }
    ]
  }
}