{
  "manageEntity": {
    "action": "Save",
    "entityId": "196282",
    "entityType": "Track",
    "nonce": "0x4c7657a567861db934fea9125721540d483cd4791a049d448ab44d1ec016ab7c",
    "signature": "0x98bdceaaa9efba802ccd86044030c0ba868d386378fdfb155ab72b7a49efc8bf3cc95b138e605a039c3d7e3937c8d3b1ab4629338d4e302f31be267a8663dbe81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}