{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950521,-0.310660,0.000000,0.000000,0.173787,-0.531732,0.828890,0.000000,-0.256960,0.786216,0.561993,0.000000,-1640660.914215,5019901.840738,3564243.458873,1],    "boundingVolume": {    "region": [1.886635,0.596744,1.886733,0.596843,0.000000,8.804403]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/8_1395557.b3dm"}}}