import requests

url = "https://api.diga.io/v1/call/bulk-delete"

payload = { "call_ids": ["3c90c3cc-0d44-4b50-8888-8dd25736052a"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "deleted": 123
}