curl --request PATCH \
  --url https://app.chatobserver.com/api/v2/groups/{id}/memberships \
  --header 'Content-Type: application/json' \
  --header 'x-chatobserver-key: <api-key>' \
  --data '
{
  "expectedRevision": 123,
  "idempotencyKey": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "addPromptIds": [],
  "removePromptIds": []
}
'

const options = {
  method: 'PATCH',
  headers: {'x-chatobserver-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    expectedRevision: 123,
    idempotencyKey: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    addPromptIds: [],
    removePromptIds: []
  })
};

fetch('https://app.chatobserver.com/api/v2/groups/{id}/memberships', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.chatobserver.com/api/v2/groups/{id}/memberships"

payload = {
    "expectedRevision": 123,
    "idempotencyKey": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "addPromptIds": [],
    "removePromptIds": []
}
headers = {
    "x-chatobserver-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "data": {
    "addedPromptIds": [
      123
    ],
    "removedPromptIds": [
      123
    ],
    "revision": 123,
    "replayed": true
  }
}