getModifiedSince

[
	{
		customer_id: int,
		number: string,
		name: string,
		vat: string,
		address: string,
		city: string,
		zip_code: string,
		country_id: int,
		email: string,
		website: string,
		phone: string,
		fax: string,
		contact_name: string,
		contact_email: string,
		contact_phone: string,
		notes: string,
		salesman_id: int,
		discount: float,
		credit_limit: float,
		maturity_date_id: int,
		payment_day: int,
		field_notes: string,
		language_id: int,
		payment_method_id: int,
		delivery_method_id: int,
		country:
		{
			country_id: int,
			country: string,
			iso_3166_1: string
		},
		language:
		{
			language_id: int,
			code: string,
			name: string
		},
		maturity_date:
		{
			maturity_date_id: int,
			name: string,
			days: int,
			associated_discount: float
		},
		payment_method:
		{
			payment_method_id: int,
			name: string
		},
		delivery_method:
		{
			delivery_method_id: int,
			name: string
		},
		salesman:
		{
			salesman_id: int,
			number: string,
			name: string,
			base_commission: float
		},
		alternate_addresses:
		[
			{
				address_id: int,
				designation: string,
				code: string,
				address: string,
				city: string,
				zip_code: string,
				country_id: int,
				email: string,
				phone: string,
				fax: string,
				contact_name: string,
			}, (...)
		],
		copies:
		[
			{
				document_type_id: int,
				copies: int
			}, (...)
		],
		associated_taxes:
		[
			{
				tax_id: int,
			}, (...)
		]
		price_class:
		{
			price_class_id: int,
			title: string,
		}
	},
	(...)
]