{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1475434690",
    "entityType": "Track",
    "nonce": "0x803dd4acf643641cb8aa09ff0db0f970ecaae202fff180a2844db0a17df02b5f",
    "signature": "0xff355e7970f614c41cd0e4bd6597ad047026c163bafc3fbd60d2cd994ebeefbe097b01e59db1ed99e82a217e195ebb804c32acdaf7e6afa075c845429f05ad861b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}