curl --request POST \
  --url https://seller-api.teez.kz/api/v1/auth/token \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "clientId": "client",
  "clientSecret": "secret"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({clientId: 'client', clientSecret: 'secret'})
};

fetch('https://seller-api.teez.kz/api/v1/auth/token', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://seller-api.teez.kz/api/v1/auth/token"

payload = {
    "clientId": "client",
    "clientSecret": "secret"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "accessToken": "<string>",
  "expiresIn": 123,
  "tokenType": "<string>"
}

{
  "statusCode": 400,
  "message": "One or more errors occurred!",
  "errors": {}
}