{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1161067550",
    "entityType": "Track",
    "nonce": "0x3a90305aa95424aee7390c101417affc7b5889a9e84e0eddb83684c8e4a56953",
    "signature": "0xe548328b3d409ffa3d481b046bc71e9e67f735d71e6aa619cb6ae3c80610ad091c9d184fc1d22a9108c0ad6ed6b203558938a2a78b252b4e848a6f98a82afe241c",
    "signer": "0xEB39F45D1FefD7937e974073E0D014827dfCbbF7",
    "userId": "404713456"
  }
}