{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949120,-0.314914,0.000000,0.000000,0.116097,-0.349905,0.929563,0.000000,-0.292464,0.881458,0.370806,0.000000,-1866232.334115,5624646.825784,2350303.822048,1],    "boundingVolume": {    "region": [1.891108,0.379820,1.891216,0.379935,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77464.b3dm"}}}