{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950171,-0.311729,0.000000,0.000000,0.173870,-0.529966,0.830003,0.000000,-0.258194,0.786991,0.560340,0.000000,-1648528.707980,5024821.011856,3553736.777023,1],    "boundingVolume": {    "region": [1.887727,0.594731,1.887891,0.594862,0.000000,8.743291]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1459819.b3dm"}}}