{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950844,-0.309669,0.000000,0.000000,0.172973,-0.531118,0.829454,0.000000,-0.256316,0.787023,0.561157,0.000000,-1636542.936439,5025039.742576,3558928.506683,1],    "boundingVolume": {    "region": [1.885568,0.595673,1.885714,0.595893,0.000000,8.801387]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/12_1421884.b3dm"}}}