List customers by filter

curl --request POST \
  --url https://api.cloud.flexprice.io/v1/customers/search \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "customer_ids": [
    "<string>"
  ],
  "email": "<string>",
  "end_time": "<string>",
  "expand": "<string>",
  "external_id": "<string>",
  "external_ids": [
    "<string>"
  ],
  "filters": [
    {
      "data_type": "string",
      "field": "<string>",
      "operator": "eq",
      "value": {
        "array": [
          "<string>"
        ],
        "boolean": true,
        "date": "<string>",
        "number": 123,
        "string": "<string>"
      }
    }
  ],
  "limit": 500,
  "offset": 1,
  "order": "asc",
  "parent_customer_ids": [
    "<string>"
  ],
  "sort": [
    {
      "direction": "asc",
      "field": "<string>"
    }
  ],
  "start_time": "<string>",
  "status": "published"
}
'

{
  "items": [
    {
      "address_city": "<string>",
      "address_country": "<string>",
      "address_line1": "<string>",
      "address_line2": "<string>",
      "address_postal_code": "<string>",
      "address_state": "<string>",
      "created_at": "<string>",
      "created_by": "<string>",
      "email": "<string>",
      "environment_id": "<string>",
      "external_id": "<string>",
      "id": "<string>",
      "metadata": {},
      "name": "<string>",
      "parent_customer": "<unknown>",
      "parent_customer_id": "<string>",
      "status": "published",
      "tenant_id": "<string>",
      "updated_at": "<string>",
      "updated_by": "<string>"
    }
  ],
  "pagination": {
    "limit": 123,
    "offset": 123,
    "total": 123
  }
}