{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950640,-0.310297,0.000000,0.000000,0.173554,-0.531709,0.828954,0.000000,-0.256679,0.786375,0.561899,0.000000,-1638869.671704,5020915.615120,3563643.579603,1],    "boundingVolume": {    "region": [1.886268,0.596650,1.886335,0.596709,0.000000,8.668109]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7.b3dm"}}}