{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950715,-0.310066,0.000000,0.000000,0.173199,-0.531059,0.829445,0.000000,-0.256641,0.786907,0.561171,0.000000,-1638622.299683,5024299.141355,3559016.743049,1],    "boundingVolume": {    "region": [1.886001,0.595742,1.886116,0.595857,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1343531.b3dm"}}}