curl --request POST \
  --url https://api.kamino.finance/ktx/klend/withdraw \
  --header 'Content-Type: application/json' \
  --data '
{
  "wallet": "KUMtRazMP7vwvc2kthnGZ9Cq6ZsGRiYC97snMYepNx9",
  "market": "7u3HeHxYDLhnCoErrtycNokbQYbWGzLs6JSDqGAv5PfF",
  "reserve": "D6q6wuQSrifJKZYpR1M8R4YawnLDtDsMmWM1NbBmgJ59",
  "amount": "0.1234"
}
'

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    wallet: 'KUMtRazMP7vwvc2kthnGZ9Cq6ZsGRiYC97snMYepNx9',
    market: '7u3HeHxYDLhnCoErrtycNokbQYbWGzLs6JSDqGAv5PfF',
    reserve: 'D6q6wuQSrifJKZYpR1M8R4YawnLDtDsMmWM1NbBmgJ59',
    amount: '0.1234'
  })
};

fetch('https://api.kamino.finance/ktx/klend/withdraw', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.kamino.finance/ktx/klend/withdraw"

payload = {
    "wallet": "KUMtRazMP7vwvc2kthnGZ9Cq6ZsGRiYC97snMYepNx9",
    "market": "7u3HeHxYDLhnCoErrtycNokbQYbWGzLs6JSDqGAv5PfF",
    "reserve": "D6q6wuQSrifJKZYpR1M8R4YawnLDtDsMmWM1NbBmgJ59",
    "amount": "0.1234"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

false

{
  "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAQAEB4U90z775Z0G20Lzbx64AwbcGsJTUS+D6M2d1yQDvRL+MXyh2DY6ZPXvcFUmkblzqU7UrFcH4BAOPAPQXUWHKZS66KvlDTwMypF/H+icat/xVYNA0OvZ+RMaheXL0QJajAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD9ps6fZhmN2HDYqYbzBnXEb4Pi9Sg0h5UvXVBWPj73qMlyWPTiSJ8bs9ECkUjg2DC1oTmdr/EIQEjnvY2+n4WQTZCvHbiTnsNf+U2WQNV9zDJ5S7Phu2b9OuhJqE3NuUsuvLnkdJfjUAGox8/57aeYKvmQtCaruy3qoGNzwovloCBQYAAQAHAxEBAQYRAAsIDw0HAgEQEREEBgoJDgwQ8iPGiVLh8rYA4fUFAAAAAAGC6dRmw0Z9LrKw2cy+tHvb9JXuHBu0d9Dar60DX6fr5AUFLxMJAQYVBAsCBwM="
}

{
  "statusCode": 400,
  "message": "<string>",
  "error": "Bad Request",
  "code": "DECIMAL_TO_LAMPORTS_OVERFLOW"
}