{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950431,-0.310936,0.000000,0.000000,0.173524,-0.530407,0.829794,0.000000,-0.257471,0.787006,0.560652,0.000000,-1643915.926019,5024919.337876,3555720.630747,1],    "boundingVolume": {    "region": [1.886924,0.595115,1.887024,0.595232,0.000000,8.731197]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7_1449882.b3dm"}}}