track_index: 1
uid: ATU_00000001
track_ref: AT_00010001_01
pack_ref: AP_00010002

track_index: 2
uid: ATU_00000002
track_ref: AT_00010002_01
pack_ref: AP_00010002

track_index: 3
uid: ATU_00000003
track_ref: AT_00010001_01
pack_ref: AP_00010002

track_index: 4
uid: ATU_00000004
track_ref: AT_00010002_01
pack_ref: AP_00010002
