{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896318,-0.443411,0.000000,0.000000,0.283798,-0.573674,0.768347,0.000000,-0.339754,0.686784,0.642569,0.000000,-2169997.796381,4386467.264039,4076597.207665,1],    "boundingVolume": {    "region": [2.030131,0.697787,2.030264,0.697906,0.000000,66.439108]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_539974.b3dm"}}}