{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950421,-0.310966,0.000000,0.000000,0.173508,-0.530301,0.829865,0.000000,-0.257518,0.787066,0.560546,0.000000,-1644218.098852,5025299.992291,3555047.428748,1],    "boundingVolume": {    "region": [1.886915,0.594972,1.887097,0.595118,0.000000,8.815021]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1449496.b3dm"}}}