{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948815,-0.315831,0.000000,0.000000,0.176361,-0.529822,0.829569,0.000000,-0.261453,0.785453,0.560986,0.000000,-1669342.942789,5015015.445884,3557841.434019,1],    "boundingVolume": {    "region": [1.892081,0.595465,1.892177,0.595688,0.000000,8.800682]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1181796.b3dm"}}}