{"columns":[{"kind":"Default","name":"finish_date","num_defaults":0,"num_rows":166},{"kind":"Default","name":"finish_time_us","num_defaults":0,"num_rows":166},{"kind":"Default","name":"kind","num_defaults":148,"num_rows":166},{"kind":"Default","name":"parent_span_id","num_defaults":8,"num_rows":166},{"kind":"Default","name":"span_id","num_defaults":0,"num_rows":166},{"kind":"Default","name":"start_time_us","num_defaults":0,"num_rows":166},{"kind":"Default","name":"trace_id","num_defaults":0,"num_rows":166}],"version":0}