Retrieve a specific unsubscribed member

Example response

{
  "firstname": "John",
  "lastname": "Doe",
  "company": "John Doe Company inc",
  "email": "john.doe@example.org",
  "gender": "m",
  "language": "en_ca",
  "joinedOn": "2015-10-05 11:09:04.710",
  "updatedOn": "2016-12-10 12:41:42.020",
  "consentType": "implied",
  "postalCode": "A0A 0A0",
  "country": "CA",
  "note": "He's awesome",
  "unsubscribedOn": "2015-10-05 11:09:04.710",
  "customFields": {
    "1": "this is a test !",
    "2": 6544,
    "3": 1.5,
    "4": "2000-01-01"
  }
}