curl --request POST \
  --url https://app.stockshift.io/api/v1/apps/signatures/exchange \
  --header 'Content-Type: application/json' \
  --header 'DPoP: <dpop>' \
  --data '
{
  "code": "7t3uQmP0oXr5fVw0b1s2y9nqJpZcE4kGhA8dLmTn6Rw",
  "code_verifier": "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
}
'

import requests

url = "https://app.stockshift.io/api/v1/apps/signatures/exchange"

payload = {
    "code": "7t3uQmP0oXr5fVw0b1s2y9nqJpZcE4kGhA8dLmTn6Rw",
    "code_verifier": "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
}
headers = {
    "DPoP": "<dpop>",
    "Content-Type": "application/json"
}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://app.stockshift.io/api/v1/apps/signatures/exchange",
  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([
    'code' => '7t3uQmP0oXr5fVw0b1s2y9nqJpZcE4kGhA8dLmTn6Rw',
    'code_verifier' => 'dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "DPoP: <dpop>"
  ],
]);

$response = curl_exec($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://app.stockshift.io/api/v1/apps/signatures/exchange"

	payload := strings.NewReader("{\n  \"code\": \"7t3uQmP0oXr5fVw0b1s2y9nqJpZcE4kGhA8dLmTn6Rw\",\n  \"code_verifier\": \"dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk\"\n}")

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

	req.Header.Add("DPoP", "<dpop>")
	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))

}

{
  "data": {
    "token": "<string>",
    "expires_at": "<string>"
  }
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "code": "<string>",
  "detail": "<string>",
  "errors": {},
  "feature": "<string>",
  "reason": "<string>",
  "attempts_left": 123,
  "rule_ids": [
    "<string>"
  ],
  "witness": "<string>",
  "blind_recount": true,
  "flags": [
    {
      "flag": "<string>",
      "facts": {},
      "choices": [
        "<string>"
      ]
    }
  ]
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "code": "<string>",
  "detail": "<string>",
  "errors": {},
  "feature": "<string>",
  "reason": "<string>",
  "attempts_left": 123,
  "rule_ids": [
    "<string>"
  ],
  "witness": "<string>",
  "blind_recount": true,
  "flags": [
    {
      "flag": "<string>",
      "facts": {},
      "choices": [
        "<string>"
      ]
    }
  ]
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "code": "<string>",
  "detail": "<string>",
  "errors": {},
  "feature": "<string>",
  "reason": "<string>",
  "attempts_left": 123,
  "rule_ids": [
    "<string>"
  ],
  "witness": "<string>",
  "blind_recount": true,
  "flags": [
    {
      "flag": "<string>",
      "facts": {},
      "choices": [
        "<string>"
      ]
    }
  ]
}