Handle "Date": { "@nil": "true"} during jackson parsing

Question

I am trying to parse json using jackson parser. Jackson parse the data successfully, but when @nil:true comes in the json, code breaks and gives an error:

Can not deserialize instance of java.lang.String out of START_OBJECT token

json string like this:

[
  {
    "Users": {
      "UserID": "1",
       "ExpirationDate": {
        "@nil": "true"
      }     
    }
  }
 ]

but when json comes like below, then parsing happens successfully:

[
  {
    "Users": {
      "UserID": "1",
       "ExpirationDate": "2016-07-07"
      }     
    }
  }
 ]

Can you please let me know, how to handle such type of cases.