Page offset (default: 1)

Page size (default: 25)

Sort by one of the following: created_at, updated_at, due_date, state, entity_type. available operators: asc, desc. example: sort=created_at:asc,updated_at:desc

Available filters: client_uid: filter[client_uid][eq]=123.
matter_uid: filter[matter_uid][eq]=123.
state: filter[state][in]=DUE/OVERDUE/NOT_YET_DUE/PAID/CANCELLED.
created_at: filter[created_at][eq/lt/lte/gt/gte]=2019-01-01.
updated_at: filter[updated_at][eq/lt/lte/gt/gte]=2019-01-01.
due_date: filter[due_date][eq/lt/lte/gt/gte]=2019-01-01.
entity_type: filter[entity_type][in]=Cart,Invoice,Meeting,EventAttendance,ProductOrder,ClientBookingPackage,Payou,PendingBooking,PendingClientBookingPackage.
entity_uid: allowed only with one matching entity_type. for example: filter[entity_uid][eq]=123&filter[entity_type][in]=Meeting.

API Token. The resulting header should look like this: 'Authorization: "Bearer API_TOKEN"'