{
  "manageEntity": {
    "action": "Save",
    "entityId": "795418160",
    "entityType": "Track",
    "nonce": "0x2020a913c2722652bdbb20b65cd6c2313a00298486ec0fc6fef702f7714aae40",
    "signature": "0x50aa60d11ad21f349aed635cc682a4722b21259053bc991932f396fb50cef4bc5493cd6c78387c60d919785961d5ab136b9e79d132bd752c3f8061df7e07952c1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}