{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950719,-0.310055,0.000000,0.000000,0.173403,-0.531704,0.828988,0.000000,-0.256490,0.786473,0.561848,0.000000,-1637658.843211,5021541.692849,3563320.228231,1],    "boundingVolume": {    "region": [1.885964,0.596533,1.886130,0.596702,0.000000,8.809550]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/2_1392951.b3dm"}}}