{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949133,-0.314875,0.000000,0.000000,0.116103,-0.349971,0.929538,0.000000,-0.292420,0.881445,0.370871,0.000000,-1865952.553885,5624566.655019,2350715.014191,1],    "boundingVolume": {    "region": [1.891067,0.379889,1.891176,0.380005,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1081.b3dm"}}}