curl --request POST \
  --url https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "accountIdentifier": "8032324141",
  "amount": 0.5,
  "assetId": "37079b6b-b74f-48e9-a394-9a5cbae88f12",
  "currency": "NGN",
  "institutionIdentifier": "OPAYNGPC"
}
'

import requests

url = "https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote"

payload = {
    "accountIdentifier": "8032324141",
    "amount": 0.5,
    "assetId": "37079b6b-b74f-48e9-a394-9a5cbae88f12",
    "currency": "NGN",
    "institutionIdentifier": "OPAYNGPC"
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    accountIdentifier: '8032324141',
    amount: 0.5,
    assetId: '37079b6b-b74f-48e9-a394-9a5cbae88f12',
    currency: 'NGN',
    institutionIdentifier: 'OPAYNGPC'
  })
};

fetch('https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'accountIdentifier' => '8032324141',
    'amount' => 0.5,
    'assetId' => '37079b6b-b74f-48e9-a394-9a5cbae88f12',
    'currency' => 'NGN',
    'institutionIdentifier' => 'OPAYNGPC'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote"

	payload := strings.NewReader("{\n  \"accountIdentifier\": \"8032324141\",\n  \"amount\": 0.5,\n  \"assetId\": \"37079b6b-b74f-48e9-a394-9a5cbae88f12\",\n  \"currency\": \"NGN\",\n  \"institutionIdentifier\": \"OPAYNGPC\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"accountIdentifier\": \"8032324141\",\n  \"amount\": 0.5,\n  \"assetId\": \"37079b6b-b74f-48e9-a394-9a5cbae88f12\",\n  \"currency\": \"NGN\",\n  \"institutionIdentifier\": \"OPAYNGPC\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.blockradar.co/v1/wallets/{walletId}/withdraw/fiat/quote")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"accountIdentifier\": \"8032324141\",\n  \"amount\": 0.5,\n  \"assetId\": \"37079b6b-b74f-48e9-a394-9a5cbae88f12\",\n  \"currency\": \"NGN\",\n  \"institutionIdentifier\": \"OPAYNGPC\"\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "estimatedArrivalTime": 30,
    "nativeBalance": "0.001341843733953408",
    "nativeBalanceInUSD": "0.0013413069964598266368",
    "networkFee": "0.000012017210897804",
    "networkFeeInUSD": "0.0000120124040134448784",
    "transactionFee": "0"
  },
  "message": "Successful",
  "status": true
}