{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950725,-0.310037,0.000000,0.000000,0.173400,-0.531730,0.828973,0.000000,-0.256470,0.786463,0.561871,0.000000,-1637531.847811,5021478.913406,3563466.075763,1],    "boundingVolume": {    "region": [1.885945,0.596561,1.886110,0.596730,0.000000,8.809550]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/2_1386680.b3dm"}}}