{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949296,-0.314383,0.000000,0.000000,0.175743,-0.530667,0.829160,0.000000,-0.260125,0.785461,0.561593,0.000000,-1660865.400936,5015073.957168,3561698.430520,1],    "boundingVolume": {    "region": [1.890553,0.596269,1.890652,0.596350,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1448072.b3dm"}}}