{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948996,-0.315289,0.000000,0.000000,0.176048,-0.529892,0.829591,0.000000,-0.261012,0.785624,0.560953,0.000000,-1666523.806939,5016103.655262,3557630.404236,1],    "boundingVolume": {    "region": [1.891489,0.595483,1.891626,0.595589,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071075.b3dm"}}}