{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1873632778",
    "entityType": "Track",
    "nonce": "0x7bcd2a95fdb2cbec26fc43de03f7627257c085cc29e1f23f910202aa027c495d",
    "signature": "0x9a9a40aeb947af4ceb7a9da16e27218958ae1c138f068605bd71e219a80ee33e4225ce82785979ec926c9e63cc035c1035f47948f54f885c1503a8b5658e829e1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}