curl --request POST \
  --url https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/customers \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "first_name": "",
  "last_name": "",
  "display_name": "",
  "email": "",
  "phone": "",
  "notes": "",
  "has_different_billing_address": "",
  "status": "",
  "company_name": "",
  "alt_email": "",
  "billing_address_1": "",
  "billing_address_2": "",
  "billing_city": "",
  "billing_state": "",
  "billing_zip_code": "",
  "assigned_to": "",
  "secondary_email": "",
  "secondary_phone": "",
  "service_address_1": "",
  "service_address_2": "",
  "service_address_city": "",
  "service_address_state": "",
  "service_address_zip_code": "",
  "job_notes": "",
  "customfields": [
    {
      "id": "",
      "field_instance_id": "",
      "value": ""
    },
    {
      "id": "",
      "field_instance_id": "",
      "value": ""
    }
  ],
  "locations": [
    {
      "object_type": "",
      "object_id": "",
      "title": "",
      "address_1": "",
      "address_2": "",
      "city": "",
      "state": "",
      "zip_code": "",
      "is_main_location": ""
    },
    {
      "object_type": "",
      "object_id": "",
      "title": "",
      "address_1": "",
      "address_2": "",
      "city": "",
      "state": "",
      "zip_code": "",
      "is_main_location": ""
    }
  ],
  "account_type": "",
  "pipeline_status_id": "",
  "lead_source_id": "",
  "tags": ""
}
'

import requests

url = "https://ywe3crmpll.execute-api.us-east-2.amazonaws.com/stage/customers"

payload = {
    "first_name": "",
    "last_name": "",
    "display_name": "",
    "email": "",
    "phone": "",
    "notes": "",
    "has_different_billing_address": "",
    "status": "",
    "company_name": "",
    "alt_email": "",
    "billing_address_1": "",
    "billing_address_2": "",
    "billing_city": "",
    "billing_state": "",
    "billing_zip_code": "",
    "assigned_to": "",
    "secondary_email": "",
    "secondary_phone": "",
    "service_address_1": "",
    "service_address_2": "",
    "service_address_city": "",
    "service_address_state": "",
    "service_address_zip_code": "",
    "job_notes": "",
    "customfields": [
        {
            "id": "",
            "field_instance_id": "",
            "value": ""
        },
        {
            "id": "",
            "field_instance_id": "",
            "value": ""
        }
    ],
    "locations": [
        {
            "object_type": "",
            "object_id": "",
            "title": "",
            "address_1": "",
            "address_2": "",
            "city": "",
            "state": "",
            "zip_code": "",
            "is_main_location": ""
        },
        {
            "object_type": "",
            "object_id": "",
            "title": "",
            "address_1": "",
            "address_2": "",
            "city": "",
            "state": "",
            "zip_code": "",
            "is_main_location": ""
        }
    ],
    "account_type": "",
    "pipeline_status_id": "",
    "lead_source_id": "",
    "tags": ""
}
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: '',
    last_name: '',
    display_name: '',
    email: '',
    phone: '',
    notes: '',
    has_different_billing_address: '',
    status: '',
    company_name: '',
    alt_email: '',
    billing_address_1: '',
    billing_address_2: '',
    billing_city: '',
    billing_state: '',
    billing_zip_code: '',
    assigned_to: '',
    secondary_email: '',
    secondary_phone: '',
    service_address_1: '',
    service_address_2: '',
    service_address_city: '',
    service_address_state: '',
    service_address_zip_code: '',
    job_notes: '',
    customfields: [
      {id: '', field_instance_id: '', value: ''},
      {id: '', field_instance_id: '', value: ''}
    ],
    locations: [
      {
        object_type: '',
        object_id: '',
        title: '',
        address_1: '',
        address_2: '',
        city: '',
        state: '',
        zip_code: '',
        is_main_location: ''
      },
      {
        object_type: '',
        object_id: '',
        title: '',
        address_1: '',
        address_2: '',
        city: '',
        state: '',
        zip_code: '',
        is_main_location: ''
      }
    ],
    account_type: '',
    pipeline_status_id: '',
    lead_source_id: '',
    tags: ''
  })
};

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