{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950170,-0.311733,0.000000,0.000000,0.173866,-0.529949,0.830015,0.000000,-0.258200,0.787001,0.560323,0.000000,-1648570.781339,5024884.308729,3553628.488240,1],    "boundingVolume": {    "region": [1.887731,0.594710,1.887895,0.594841,0.000000,8.743291]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1459737.b3dm"}}}