{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949473,-0.313849,0.000000,0.000000,0.175430,-0.530721,0.829192,0.000000,-0.259693,0.785638,0.561545,0.000000,-1658108.013024,5016201.637265,3561397.169603,1],    "boundingVolume": {    "region": [1.889991,0.596211,1.890090,0.596293,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444023.b3dm"}}}