package model import ( "database/sql" "time" ) type Activation struct { ID int64 `json:"id"` LicenseID int64 `json:"license_id"` MachineFingerprint string `json:"machine_fingerprint"` Hostname string `json:"hostname"` OSInfo string `json:"os_info"` AppVersion string `json:"app_version"` IPAddress string `json:"ip_address"` ActivatedAt time.Time `json:"activated_at"` DeactivatedAt sql.NullTime `json:"deactivated_at"` IsActive bool `json:"is_active"` LastSeenAt time.Time `json:"last_seen_at"` }