{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949025,-0.315200,0.000000,0.000000,0.175977,-0.529842,0.829638,0.000000,-0.260953,0.785693,0.560883,0.000000,-1666149.063177,5016544.871452,3557186.767248,1],    "boundingVolume": {    "region": [1.891396,0.595399,1.891533,0.595505,0.000000,8.713676]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1071926.b3dm"}}}