{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1421626145",
    "entityType": "Track",
    "nonce": "0x5c52cad4aa1b301367ebbf6a6946c85f709c1b8c790dfc5fbf3c0fc3e03dd72b",
    "signature": "0x26b6897f4e3d11366dcbfaa48b5b501fb4a94f922a299f265118e88e77217842510611a8f654f832b1ca3e661a09b2eaa2722e3c42192d6c43494106ab3d7e511b",
    "signer": "0x17dD449C895B0Bd0695f18B39fc782E606c2a10F",
    "userId": "718782552"
  }
}