{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898647,-0.438673,0.000000,0.000000,0.283596,-0.580963,0.762925,0.000000,-0.333733,0.683671,0.649012,0.000000,-2131601.528027,4366707.648798,4117584.970408,1],    "boundingVolume": {    "region": [2.024867,0.706248,2.024968,0.706322,0.000000,6.086791]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/2_1817820.b3dm"}}}