{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.943180,-0.332282,0.000000,0.000000,0.186028,-0.528039,0.828594,0.000000,-0.274745,0.779863,0.562432,0.000000,-1754222.530762,4979344.870256,3567030.722686,1],    "boundingVolume": {    "region": [1.909456,0.597284,1.909581,0.597364,0.000000,8.786162]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_1256048.b3dm"}}}