{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1255399633",
    "entityType": "Track",
    "nonce": "0x991438bff6722fda98596296be6c42ec20e3cc77aec78d8dc3870d2e59eb510c",
    "signature": "0x06fa83f6e6771269532f7e5226ae04898013c099def44300a5b7b33206ec8b867603f02fc64815fd28674c8dc0bb2944b762a5e11246cd4650dd24a1f0583edb1b",
    "signer": "0xAcF1330412ae929ED0eab55ee4fD668A669880E1",
    "userId": "615925709"
  }
}