{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1923608162",
    "entityType": "Track",
    "nonce": "0x0d55eabf35c85c0bf0606bf1201ea102cdc0a4ca5c74a7ae74f168e47a3454b0",
    "signature": "0xea735840004d3aaf83966eea924a5191da7db1d11c9f60c718f1d37941275bb03812e5bde171cb641d4562ca190fcefdb2e59f3b074ec3c9dd7d97952ec34fe81c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}