{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948809,-0.315849,0.000000,0.000000,0.176367,-0.529807,0.829578,0.000000,-0.261471,0.785457,0.560973,0.000000,-1669454.265992,5015036.465665,3557760.117560,1],    "boundingVolume": {    "region": [1.892100,0.595449,1.892196,0.595672,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070924.b3dm"}}}