curl --request POST \
  --url https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/material-lists/{id}/item-connect \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "to_entity": "",
  "to_entity_id": "",
  "item_ids": ""
}
'

import requests

url = "https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/material-lists/{id}/item-connect"

payload = {
    "to_entity": "",
    "to_entity_id": "",
    "item_ids": ""
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({to_entity: '', to_entity_id: '', item_ids: ''})
};

fetch('https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/material-lists/{id}/item-connect', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));