import requests

url = "https://api.13-215-85-171.sslip.io/v1/volumes/{id}/files/replace"

payload = {
    "files": ["<string>"],
    "pattern": "<string>",
    "replacement": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "dry_run": true,
  "replacements": 123,
  "files_modified": 123,
  "files_skipped": 123,
  "binary_files_skipped": 123
}