subscription_id string, null
invoice_id string, not null
amount_in_decimal string, null
date_from timestamp, not null
date_to timestamp, not null
description string, not null
discount_amount long, null
entity_description string, null
entity_type string, not null
is_taxed boolean, not null, default=false
item_level_discount_amount long, null
pricing_model string, null
quantity_in_decimal string, null
reference_line_item_id string, null
tax_amount long, null, default=0
tax_exempt_reason string, null
unit_amount long, not null
unit_amount_in_decimal string, null