import requests

url = "https://www.bitexen.com/api/v1/orders/"

headers = {
'ACCESS-USER': "your.username",
'ACCESS-PASSPHRASE': "your.passphrase",
'ACCESS-TIMESTAMP': "timestamp",
'ACCESS-SIGN': "J1r5Ubuae30tS-87tU28TQ ",
'ACCESS-KEY': "0_wRoP_lgqxoVjKGnhxFdA ",
'content-type': "application/json"
}

payload = {
'order_type': "limit",
'market_code': "BTCTRY",
'volume': "10000",
'buy_sell': "B",
'price': "9300",
'client_id': 0,
'post_only': False,
'account_name': "Main"
}

response = requests.request("POST", url, data=payload, headers=headers)

print(response.text)

{
"status": "success",
"data": {
"order_number": 54264
}
}