code'favorite' | 'reply' | 'mention' | 'modify' | 'permission' | 'report' | 'report_dealt' | 'mail' | 'sensitive'
{"stackTrail":"components:schemas:models.Message:properties:data","oasType":"schema","type":"unknown"}
has_readboolean
兼容旧版, 永远为false，以MessageUser的HasRead为准