{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950843,-0.309673,0.000000,0.000000,0.172534,-0.529762,0.830412,0.000000,-0.256618,0.787940,0.559731,0.000000,-1638465.671903,5030864.623565,3549864.077434,1],    "boundingVolume": {    "region": [1.885554,0.593988,1.885737,0.594134,0.000000,6.731379]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1375319.b3dm"}}}