curl --request POST \
  --url https://zero.cat/api/user/topup \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "key": ""
}'

import requests

url = "https://zero.cat/api/user/topup"

payload = { "key": "" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

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

fetch('https://zero.cat/api/user/topup', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "message": "",
  "data": 500000
}