{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951635,-0.307231,0.000000,0.000000,0.170593,-0.528404,0.831677,0.000000,-0.254986,0.789808,0.557840,0.000000,-1628031.369373,5042759.246790,3537848.299631,1],    "boundingVolume": {    "region": [1.883024,0.591737,1.883132,0.591825,0.000000,7.963517]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/39/44_1383050.b3dm"}}}