{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949287,-0.314410,0.000000,0.000000,0.175773,-0.530707,0.829128,0.000000,-0.260137,0.785423,0.561640,0.000000,-1660941.947806,5014832.919680,3562000.075456,1],    "boundingVolume": {    "region": [1.890582,0.596326,1.890680,0.596408,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1416915.b3dm"}}}