{ "Mappings": [{ "StartTime": 500.0, "Objects": [{ "StartTime": 500.0, "EndTime": 1500.0, "Column": 0, "NodeSamples": [ ["normal-hitnormal"], [] ] }] }, { "StartTime": 2000.0, "Objects": [{ "StartTime": 2000.0, "EndTime": 3000.0, "Column": 2, "NodeSamples": [ ["drum-hitnormal"], [] ] }] }] }