curl --request POST \
  --url https://api.blockradar.co/v1/wallets/{walletId}/salvage/network-fee \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
"{\n    \"senderAddress\": \"0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5\",\n    \"recipientAddress\": \"0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22\",\n    \"tokenAddress\": \"0x337610d27c682E347C9cD60BD4b3b107C9d34dDd\",\n    \"amount\": \"0.01\",\n    \"blockchainId\": \"b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa\",\n    \"rpcUrl\": \"https://opbnb-testnet-rpc.publicnode.com\",\n    \"isL2\": false // optional\n}"
'

import requests

url = "https://api.blockradar.co/v1/wallets/{walletId}/salvage/network-fee"

payload = "{
    \"senderAddress\": \"0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5\",
    \"recipientAddress\": \"0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22\",
    \"tokenAddress\": \"0x337610d27c682E347C9cD60BD4b3b107C9d34dDd\",
    \"amount\": \"0.01\",
    \"blockchainId\": \"b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa\",
    \"rpcUrl\": \"https://opbnb-testnet-rpc.publicnode.com\",
    \"isL2\": false // optional
}"
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('{\n    "senderAddress": "0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5",\n    "recipientAddress": "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",\n    "tokenAddress": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",\n    "amount": "0.01",\n    "blockchainId": "b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa",\n    "rpcUrl": "https://opbnb-testnet-rpc.publicnode.com",\n    "isL2": false // optional\n}')
};

fetch('https://api.blockradar.co/v1/wallets/{walletId}/salvage/network-fee', 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}/salvage/network-fee",
  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('{
    "senderAddress": "0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5",
    "recipientAddress": "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
    "tokenAddress": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
    "amount": "0.01",
    "blockchainId": "b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa",
    "rpcUrl": "https://opbnb-testnet-rpc.publicnode.com",
    "isL2": false // optional
}'),
  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}/salvage/network-fee"

	payload := strings.NewReader("\"{\\n    \\\"senderAddress\\\": \\\"0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5\\\",\\n    \\\"recipientAddress\\\": \\\"0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22\\\",\\n    \\\"tokenAddress\\\": \\\"0x337610d27c682E347C9cD60BD4b3b107C9d34dDd\\\",\\n    \\\"amount\\\": \\\"0.01\\\",\\n    \\\"blockchainId\\\": \\\"b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa\\\",\\n    \\\"rpcUrl\\\": \\\"https://opbnb-testnet-rpc.publicnode.com\\\",\\n    \\\"isL2\\\": false // optional\\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}/salvage/network-fee")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("\"{\\n    \\\"senderAddress\\\": \\\"0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5\\\",\\n    \\\"recipientAddress\\\": \\\"0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22\\\",\\n    \\\"tokenAddress\\\": \\\"0x337610d27c682E347C9cD60BD4b3b107C9d34dDd\\\",\\n    \\\"amount\\\": \\\"0.01\\\",\\n    \\\"blockchainId\\\": \\\"b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa\\\",\\n    \\\"rpcUrl\\\": \\\"https://opbnb-testnet-rpc.publicnode.com\\\",\\n    \\\"isL2\\\": false // optional\\n}\"")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.blockradar.co/v1/wallets/{walletId}/salvage/network-fee")

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    \\\"senderAddress\\\": \\\"0x6Fe215Bc6C12f28e98016FcbA21Fa57941a10dE5\\\",\\n    \\\"recipientAddress\\\": \\\"0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22\\\",\\n    \\\"tokenAddress\\\": \\\"0x337610d27c682E347C9cD60BD4b3b107C9d34dDd\\\",\\n    \\\"amount\\\": \\\"0.01\\\",\\n    \\\"blockchainId\\\": \\\"b80d3d5e-16f1-4d99-be5e-6dfcd27f89aa\\\",\\n    \\\"rpcUrl\\\": \\\"https://opbnb-testnet-rpc.publicnode.com\\\",\\n    \\\"isL2\\\": false // optional\\n}\""

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