Cannot get Input from Laravel 5 $request, routing, Request, Authorisation Works, input doesnt

I'm having an issue with Laravel 5, the Request variable doesn't seem to be keeping the input headers I'm sending with postman, the headers do work to some extent because it still logs in with the token and restrict access with not provided. Also $request->path() returns the correct path. Any ideas?

For authentication I'm using TyMon\JWTAuth.

routes/api.php

use Illuminate\Http\Request;

Route::post('login', 'Auth\LoginController@login');
Route::group([
    'prefix' => 'restricted',
    'middleware' => 'auth:api',
], function () {

    // Authentication Routes...
    Route::get('logout', 'Auth\LoginController@logout');

    Route::get('/test', function () {
        return 'authenticated';
    });
});

Route::group([
    'prefix' => 'data',
    'middleware' => 'auth:api',
], function () {

    // Authenticated Routes...
    // Other routes
    Route::get('/icons', ['uses' => 'Api\Data\IconController@apiGet']);

    Route::get('/test', function () {
        return 'authenticated';
    });
});

IconController.php:

namespace App\Http\Controllers\Api\Data;

use App\Http\Controllers\Controller as BaseController;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;


class IconController extends BaseController
{

    public function __construct()
    {
        $this->middleware('auth:api');
    }
    public function apiGet(Request $request)
    {
        $return = [
            'return' => true,
            'errors' => []
        ];

        $jsonIn = $request->json;
        var_dump(Input::get('json'));
        var_dump($request->path());
        var_dump($request->input('json'));
        var_dump($jsonIn);
        die();
    }
}

I'm using postman to test:

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