{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950546,-0.310583,0.000000,0.000000,0.173715,-0.531658,0.828953,0.000000,-0.256916,0.786296,0.561901,0.000000,-1640379.910204,5020412.958768,3563656.803880,1],    "boundingVolume": {    "region": [1.886554,0.596633,1.886652,0.596731,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394539.b3dm"}}}