Jackson deserialization in spring fails

Question

I have an API which receives an array of objects as request body (spring framework). But jackson fails to deserialize.

RequestBody received

[
  "[Lcom.abc.def;",
  [
    {
      "@class": "com.abc.def",
      "name": "hello",
      "objectId": 1111,
    },
    {
       "@class": "com.abc.def",
      "name": "world",
      "objectId": 2222,
    }
  ]
]

Error - no String-argument constructor/factory method to deserialize from String value ('[Lcom.abc.def;');

I cannot change the client who is sending this request. Is there a way to teach spring jackson to ignore anything which is not of form key and value.