{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950553,-0.310563,0.000000,0.000000,0.173700,-0.531651,0.828961,0.000000,-0.256901,0.786310,0.561889,0.000000,-1640286.457286,5020498.061238,3563580.441821,1],    "boundingVolume": {    "region": [1.886532,0.596618,1.886630,0.596717,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394315.b3dm"}}}