{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949404,-0.314059,0.000000,0.000000,0.175213,-0.529673,0.829908,0.000000,-0.260093,0.786265,0.560482,0.000000,-1660654.691609,5020184.274671,3554637.935780,1],    "boundingVolume": {    "region": [1.890180,0.594835,1.890342,0.595100,0.000000,8.188368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1371984.b3dm"}}}