{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898313,-0.439357,0.000000,0.000000,0.284733,-0.582168,0.761582,0.000000,-0.333660,0.682204,0.650591,0.000000,-2131150.788647,4357368.863144,4127631.450424,1],    "boundingVolume": {    "region": [2.025674,0.708358,2.025684,0.708366,0.000000,6.256280]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/21.b3dm"}}}