How to send 2D array to the spring-boot post request from Postman?

Question

I am trying to send a POST request to spring-boot controller from the postman. The postman body will be a 2d array. I want to catch the 2d array in @requestBody and work with that array.

Code:

Postman schema: url : http://localhost:8081/api/ticTacToe/gameWinner

body : {
"moves" : [["CROSS","CIRCLE","CROSS"],["CROSS","CROSS","CROSS"],["CROSS","CIRCLE","CROSS"],
           ["CROSS","CIRCLE","CROSS"],["CROSS","CIRCLE","CROSS"],["CROSS","CIRCLE","CROSS"],
           ["CROSS","CIRCLE","CROSS"],["CROSS","CIRCLE","CROSS"],["CROSS","CIRCLE","CROSS"]]
}

Controller : 
package com.example.TicTacToe.Controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.example.TicTacToe.Service.TicTacToeService;

@RestController
@RequestMapping("/api/ticTacToe")
public class TicTacToeController {
private static final Logger LOGGER = LoggerFactory.getLogger(TicTacToeController.class);
@Autowired
TicTacToeService gameService;

@PostMapping("/gameWinner")
public ResponseEntity<String> resultOfTheGame(@RequestBody String[][]moves){
    
    try {
        String winner = "";
        
        winner = gameService.winnerOfTheGame(moves);
        
        if(winner.equals("CROSS")){
            System.out.println("CROSS wins!");
        }else if(winner.equals("CIRCLE")){
            System.out.println("CIRCLE wins!");
        }else{
            System.out.println("Draw!");
        }
        
    }catch(Exception e) {
        LOGGER.error("Exception Thrown {}", e.getLocalizedMessage());
        return new ResponseEntity<>(e.getLocalizedMessage(),HttpStatus.EXPECTATION_FAILED);
    }
    
    return null;
    
    }

}