{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950492,-0.310750,0.000000,0.000000,0.173864,-0.531798,0.828832,0.000000,-0.257016,0.786136,0.562080,0.000000,-1641018.928756,5019392.253303,3564792.569076,1],    "boundingVolume": {    "region": [1.886729,0.596849,1.886827,0.596947,0.000000,8.622855]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1396569.b3dm"}}}