"id","type","name","key_type","int_value","str_value"
0,"metadata","trace_uuid","single","[NULL]","00000000-0000-0000-7f42-b235fa358661"
1,"metadata","trace_time_clock_id","single",6,"[NULL]"
2,"metadata","cr-a-playstore_version_code","single",101,"[NULL]"
3,"metadata","cr-a-enabled_categories","single","[NULL]","cat1,cat2,cat3"
4,"metadata","cr-a-field_trial_hashes","single","[NULL]","{ name: 123, group: 456 } { name: 789, group: 120 } "
5,"metadata","cr-background_tracing_metadata","single","[NULL]","CgUlDsAbXx2RziSz"
6,"metadata","cr-scenario_name_hash","single",3005533841,"[NULL]"
7,"metadata","cr-triggered_rule_name_hash","single",1595654158,"[NULL]"
8,"metadata","trace_size_bytes","single",95,"[NULL]"
9,"metadata","trace_type","single","[NULL]","proto"