curl --request POST \
  --url https://api.dialtu.com/api/v2/public/salesflow/pipelines/{pipeline_id}/clients/add \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "client_ids": [
    123
  ],
  "stage_id": 123
}
'

import requests

url = "https://api.dialtu.com/api/v2/public/salesflow/pipelines/{pipeline_id}/clients/add"

payload = {
    "client_ids": [123],
    "stage_id": 123
}
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({client_ids: [123], stage_id: 123})
};

fetch('https://api.dialtu.com/api/v2/public/salesflow/pipelines/{pipeline_id}/clients/add', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));