{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950742,-0.309983,0.000000,0.000000,0.173386,-0.531789,0.828938,0.000000,-0.256414,0.786444,0.561923,0.000000,-1637177.037742,5021358.744439,3563796.199701,1],    "boundingVolume": {    "region": [1.885888,0.596624,1.886054,0.596793,0.000000,8.777975]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/3_1386949.b3dm"}}}