{
  "manageEntity": {
    "action": "Save",
    "entityId": "1035074",
    "entityType": "Track",
    "nonce": "0xc3102d52c3c7b6aaf20214f695a857a658cb5774d7b34d75efb821c3ec3382f5",
    "signature": "0x901011c5e188c18a6f79d3dae83b33c0d915c6d9445959421c33dcaa516389461640843c10d4aa4f189c58f026ffd6e42a7e00823c588b2080be4dc711dad5ef1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}