{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1911301457",
    "entityType": "Track",
    "nonce": "0xdd754df764424ede10e9d45ce0809e8fb24846bd39003dd6c4678fc5fd2ae0e6",
    "signature": "0x31394cbd3d58feea2a4c15ace87cdeb2eb455d3e0ad6f1369a95c0266086a5513b135ec29e495aba4039b8b0443452d59a25dfc01c04195d6f9a505f81bdca4b1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}