{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950023,-0.312181,0.000000,0.000000,0.174082,-0.529764,0.830088,0.000000,-0.258594,0.786949,0.560215,0.000000,-1651083.383471,5024549.742937,3552939.614545,1],    "boundingVolume": {    "region": [1.888202,0.594579,1.888366,0.594710,0.000000,16.856485]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1460866.b3dm"}}}