{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950556,-0.310554,0.000000,0.000000,0.173302,-0.530448,0.829814,0.000000,-0.257161,0.787128,0.560622,0.000000,-1641936.860434,5025702.847270,3555529.011103,1],    "boundingVolume": {    "region": [1.886481,0.595064,1.886663,0.595210,0.000000,8.781427]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1449779.b3dm"}}}