{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949137,-0.314864,0.000000,0.000000,0.116068,-0.349880,0.929576,0.000000,-0.292422,0.881485,0.370774,0.000000,-1865965.949830,5624822.485216,2350096.328359,1],    "boundingVolume": {    "region": [1.891056,0.379784,1.891164,0.379900,0.000000,65.359440]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_76965.b3dm"}}}