{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950712,-0.310074,0.000000,0.000000,0.173219,-0.531102,0.829413,0.000000,-0.256639,0.786875,0.561217,0.000000,-1638605.299948,5024093.077805,3559313.453783,1],    "boundingVolume": {    "region": [1.886010,0.595799,1.886125,0.595913,0.000000,8.794188]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1425512.b3dm"}}}