{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950753,-0.309949,0.000000,0.000000,0.173161,-0.531163,0.829386,0.000000,-0.256526,0.786882,0.561258,0.000000,-1637888.311926,5024143.050927,3559571.176739,1],    "boundingVolume": {    "region": [1.885863,0.595795,1.886008,0.596015,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422157.b3dm"}}}