{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950516,-0.310674,0.000000,0.000000,0.173754,-0.531603,0.828980,0.000000,-0.257000,0.786298,0.561861,0.000000,-1640915.160022,5020421.054400,3563400.695676,1],    "boundingVolume": {    "region": [1.886650,0.596584,1.886748,0.596683,0.000000,9.877723]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1328648.b3dm"}}}