{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950550,-0.310571,0.000000,0.000000,0.173478,-0.530957,0.829451,0.000000,-0.257062,0.786777,0.561161,0.000000,-1641305.573179,5023468.229882,3558953.647597,1],    "boundingVolume": {    "region": [1.886532,0.595730,1.886648,0.595845,0.000000,8.799150]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1424800.b3dm"}}}