REST API can’t get the response manually

I was using wrong method wp_remote_post() will work.

Here is the fix code:

$args = array(
'method'      => 'POST',
'timeout'     => 45,
'redirection' => 5,
'httpversion' => '1.0',
'body'     => array(
    'store_name' => $stidStore_name,
    'customer_name' =>$stidCustomer_name,
    'payment_type'=> $stidPaymen_type,
    'amount'=> $stidAmount,
    'customer_address'=> $stidCustomer_country,
),
);
$request = wp_remote_post( $stidUrl, $args);

$response = wp_remote_retrieve_body( $request );
$response = json_decode($response);