{
  "manageEntity": {
    "action": "Save",
    "entityId": "2035932153",
    "entityType": "Track",
    "nonce": "0xe2dc1e865348f45936fa2c7d393ed9607631700991811ecfd548833ed6c7ce14",
    "signature": "0x56859a4ac9e323d253e00435a47ba7b6c148316d16f275e003edb156090fe52933f0415234e3cda7edb23cb0b51301e8f9c62a41e868f19bb16bf0479c147e421b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}