I am trying to send a post request in laravel. Below is my code:

$response = Http::withToken($local_signature)
    ->post('myUrl', [
        "amount" => $amount,
        "narration" => $narration,
        "currency" => $currency,
        "beneficiary_name" => $beneficiary_name,
        "reference" => $reference,
        "debit_currency" => $debit_currency,
        "callback_url" => $callback_url,

        "meta" => array(

            "account_number" => $account_number,
            "routing_number" => $routing_number,
            "swift_code" => $swift_code,
            "bank_name" => $bank_name,
            "beneficiary_name" => $beneficiary_name,
            "beneficiary_address" => $beneficiary_address,
            "beneficiary_country" => $beneficiary_country,

        )
    ]);

For some reason meta is not seen by the server as I keep getting error “meta is required and it must be a non-empty array”. How do I send this post request with meta as an array?

I need the request to look like this:

{
  "amount": 500,
  "narration": "Sample USD Transfer",
  "currency": "USD",
  "beneficiary_name": "Mark Cuban",
  "meta": [
    {
     "account_number": "09182972BH",
     "routing_number": "0000000002993",
     "swift_code": "ABJG190",
     "bank_name": "BANK OF AMERICA, N.A., SAN FRANCISCO, CA",
     "beneficiary_name": "Mark Cuban",
     "beneficiary_address": "San Francisco, 4 Newton",
     "beneficiary_country": "US"
    }
  ]
}

Any help?