{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949477,-0.313836,0.000000,0.000000,0.175423,-0.530725,0.829191,0.000000,-0.259682,0.785640,0.561548,0.000000,-1658035.431962,5016214.090346,3561413.312083,1],    "boundingVolume": {    "region": [1.889977,0.596214,1.890076,0.596296,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444097.b3dm"}}}