{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950516,-0.310676,0.000000,0.000000,0.173752,-0.531597,0.828984,0.000000,-0.257002,0.786301,0.561855,0.000000,-1640929.812381,5020443.296939,3563362.865868,1],    "boundingVolume": {    "region": [1.886651,0.596577,1.886749,0.596675,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393197.b3dm"}}}