curl --request POST \
  --url https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/customers/{customerId}/customer-contact \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "first_name": "some string",
  "last_name": "some string",
  "email": "some@mail.com",
  "notes": "some string",
  "phone": "+12345678",
  "order": 1
}
'

import requests

url = "https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/customers/{customerId}/customer-contact"

payload = {
    "first_name": "some string",
    "last_name": "some string",
    "email": "some@mail.com",
    "notes": "some string",
    "phone": "+12345678",
    "order": 1
}
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({
    first_name: 'some string',
    last_name: 'some string',
    email: 'some@mail.com',
    notes: 'some string',
    phone: '+12345678',
    order: 1
  })
};

fetch('https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/customers/{customerId}/customer-contact', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));