curl --request DELETE \
  --url https://omnicommerce.sg/api/v1/promotions/{promotionId}/products \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "productIds": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ]
}
'

const options = {
  method: 'DELETE',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({productIds: ['3c90c3cc-0d44-4b50-8888-8dd25736052a']})
};

fetch('https://omnicommerce.sg/api/v1/promotions/{promotionId}/products', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://omnicommerce.sg/api/v1/promotions/{promotionId}/products"

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

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

print(response.text)

{}