{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949687,-0.313199,0.000000,0.000000,0.174743,-0.529858,0.829889,0.000000,-0.259375,0.786481,0.560510,0.000000,-1656072.742757,5021568.717651,3554818.845926,1],    "boundingVolume": {    "region": [1.889275,0.594869,1.889437,0.595135,0.000000,8.782894]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1357861.b3dm"}}}