{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949454,-0.313907,0.000000,0.000000,0.175461,-0.530705,0.829196,0.000000,-0.259742,0.785625,0.561540,0.000000,-1658419.928581,5016120.816081,3561365.980125,1],    "boundingVolume": {    "region": [1.890052,0.596205,1.890151,0.596287,0.000000,8.656528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1443872.b3dm"}}}