{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950756,-0.309941,0.000000,0.000000,0.173373,-0.531829,0.828915,0.000000,-0.256372,0.786433,0.561957,0.000000,-1636909.657599,5021289.512999,3564015.085680,1],    "boundingVolume": {    "region": [1.885844,0.596666,1.886010,0.596835,0.000000,8.777975]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/3_1387285.b3dm"}}}