{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950152,-0.311787,0.000000,0.000000,0.173924,-0.530021,0.829957,0.000000,-0.258227,0.786931,0.560409,0.000000,-1648743.143866,5024437.045138,3554177.191711,1],    "boundingVolume": {    "region": [1.887788,0.594814,1.887952,0.594945,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1451988.b3dm"}}}