curl --request POST \
  --url https://authapi.moralis.io/challenge/verify/solana \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "message": "defi.finance wants you to sign in with your Solana account:\n26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo\n\nI am a third party API\n\nURI: http://defi.finance\nVersion: 1\nNetwork: mainnet\nNonce: PYxxb9msdjVXsMQ9x\nIssued At: 2022-08-25T11:02:34.097Z\nExpiration Time: 2022-08-25T11:12:38.243Z\nResources:\n- https://docs.moralis.io/",
  "signature": "2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny"
}
'

import requests

url = "https://authapi.moralis.io/challenge/verify/solana"

payload = {
    "message": "defi.finance wants you to sign in with your Solana account:
26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo

I am a third party API

URI: http://defi.finance
Version: 1
Network: mainnet
Nonce: PYxxb9msdjVXsMQ9x
Issued At: 2022-08-25T11:02:34.097Z
Expiration Time: 2022-08-25T11:12:38.243Z
Resources:
- https://docs.moralis.io/",
    "signature": "2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny"
}
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({
    message: 'defi.finance wants you to sign in with your Solana account:\n26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo\n\nI am a third party API\n\nURI: http://defi.finance\nVersion: 1\nNetwork: mainnet\nNonce: PYxxb9msdjVXsMQ9x\nIssued At: 2022-08-25T11:02:34.097Z\nExpiration Time: 2022-08-25T11:12:38.243Z\nResources:\n- https://docs.moralis.io/',
    signature: '2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny'
  })
};

fetch('https://authapi.moralis.io/challenge/verify/solana', 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://authapi.moralis.io/challenge/verify/solana",
  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([
    'message' => 'defi.finance wants you to sign in with your Solana account:
26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo

I am a third party API

URI: http://defi.finance
Version: 1
Network: mainnet
Nonce: PYxxb9msdjVXsMQ9x
Issued At: 2022-08-25T11:02:34.097Z
Expiration Time: 2022-08-25T11:12:38.243Z
Resources:
- https://docs.moralis.io/',
    'signature' => '2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny'
  ]),
  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://authapi.moralis.io/challenge/verify/solana"

	payload := strings.NewReader("{\n  \"message\": \"defi.finance wants you to sign in with your Solana account:\\n26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo\\n\\nI am a third party API\\n\\nURI: http://defi.finance\\nVersion: 1\\nNetwork: mainnet\\nNonce: PYxxb9msdjVXsMQ9x\\nIssued At: 2022-08-25T11:02:34.097Z\\nExpiration Time: 2022-08-25T11:12:38.243Z\\nResources:\\n- https://docs.moralis.io/\",\n  \"signature\": \"2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny\"\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://authapi.moralis.io/challenge/verify/solana")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"message\": \"defi.finance wants you to sign in with your Solana account:\\n26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo\\n\\nI am a third party API\\n\\nURI: http://defi.finance\\nVersion: 1\\nNetwork: mainnet\\nNonce: PYxxb9msdjVXsMQ9x\\nIssued At: 2022-08-25T11:02:34.097Z\\nExpiration Time: 2022-08-25T11:12:38.243Z\\nResources:\\n- https://docs.moralis.io/\",\n  \"signature\": \"2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://authapi.moralis.io/challenge/verify/solana")

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  \"message\": \"defi.finance wants you to sign in with your Solana account:\\n26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo\\n\\nI am a third party API\\n\\nURI: http://defi.finance\\nVersion: 1\\nNetwork: mainnet\\nNonce: PYxxb9msdjVXsMQ9x\\nIssued At: 2022-08-25T11:02:34.097Z\\nExpiration Time: 2022-08-25T11:12:38.243Z\\nResources:\\n- https://docs.moralis.io/\",\n  \"signature\": \"2pH9DqD5rve2qV4yBDshcAjWd2y8TqMx8BPb7f3KoNnuLEhE5JwjruYi4jaFaD4HN6wriLz2Vdr32kRBAJmHcyny\"\n}"

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

{
  "id": "fRyt67D3eRss3RrX",
  "domain": "defi.finance",
  "uri": "https://defi.finance/",
  "version": "1.0",
  "nonce": "0x1234567890abcdef0123456789abcdef1234567890abcdef",
  "profileId": "0xbfbcfab169c67072ff418133124480fea02175f1402aaa497daa4fd09026b0e1",
  "network": "mainnet",
  "address": "26qv4GCcx98RihuK3c4T6ozB3J7L6VwCuFVc7Ta2A3Uo",
  "statement": "Please confirm",
  "expirationTime": "2020-01-01T00:00:00.000Z",
  "notBefore": "2020-01-01T00:00:00.000Z",
  "resources": [
    "https://docs.moralis.io/"
  ]
}