{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950515,-0.310679,0.000000,0.000000,0.173760,-0.531613,0.828973,0.000000,-0.257002,0.786289,0.561871,0.000000,-1640926.171308,5020369.420226,3563467.917605,1],    "boundingVolume": {    "region": [1.886655,0.596597,1.886753,0.596695,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393776.b3dm"}}}