java.lang.String out of START_OBJECT token

If you are developing new spring rest services and encounter the following issue

Feb 06, 2016 10:17:05 AM org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver handleHttpMessageNotReadable

WARNING: Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of java.lang.String out of START_OBJECT token

 at [Source: java.io.PushbackInputStream@353e55b8; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT token

 at [Source: java.io.PushbackInputStream@353e55b8; line: 1, column: 1]

{

   "user": {

      "organizationId": 1,

      "roleId": 1,

      "statusId": 2,

      "email": "test@test.com,

      "password": "admin"

   },

   "person": {

      "firstName": "",

      "lastName": "",

      "phone": "",

      "mobile": ""

   }

}

The resolutions could be:

• Your JSON request is invalid, check if it is complete and correct. 
• You configured the spring mvc correctly.
• You have required POM depedencies configured.
• Your annotations are correct. @RequestBody is an important tag. 

               @RequestMapping(method = RequestMethod.POST,value = "/test")

• public Response testData(@RequestBody TestData request){
  Response response = Response.positiveResponse();
  return response;
  }