<PackageReference Include="System.Drawing.Common" Version="10.0.0-rc.2.25502.107" />

BLOB

struct BLOB
The BLOB structure (nspapi.h), which is derived from Binary Large Object, contains information about a block of data.
using System.CodeDom.Compiler; namespace Windows.Win32.System.Com { [GeneratedCode("Microsoft.Windows.CsWin32", "0.3.151+58e949951d.RR")] internal struct BLOB { internal uint cbSize; internal unsafe byte* pBlobData; } }