{
  "manageEntity": {
    "action": "Save",
    "entityId": "1831605649",
    "entityType": "Track",
    "nonce": "0xed7b3fb8a6b68514fac7458414088ab11819d83dd9856f7cc43dd6b99fb08cd2",
    "signature": "0x730b44261b4992827a3d485d1d769b30b3d7b36bdae7e862386d3d1eaa79525a2616bdf1728e95869520c03c11d7deca3de8b116a7770fe3e7255cd90b0a80611b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}