Changing name of mesh

Hey guys, I’m trying to access Mesh_0 Property programatically but not able to find it. I’m trying to export scene from browser using gltfexporter and where both meshes and geometrys name are the same , but still when I open in blender I see the mesh that has differet name - how can I fix that?

I tried to set {binary:false} for Gltfexporter in order to access json data and modify mesh name manually, but then I’m losing GLB file header when I convert it to arraybuffer again.