{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951842,-0.306589,0.000000,0.000000,0.112842,-0.350333,0.929803,0.000000,-0.284806,0.884216,0.370199,0.000000,-1817366.356897,5642239.338271,2346452.594028,1],    "boundingVolume": {    "region": [1.882321,0.379163,1.882485,0.379284,0.000000,4.897333]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/18_44377.b3dm"}}}