{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950883,-0.309550,0.000000,0.000000,0.173190,-0.532010,0.828837,0.000000,-0.256025,0.786464,0.562072,0.000000,-1634693.663967,5021488.461998,3564746.866830,1],    "boundingVolume": {    "region": [1.885434,0.596805,1.885599,0.596974,0.000000,8.691446]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/4_1387850.b3dm"}}}