{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052291341",
    "entityType": "Track",
    "nonce": "0x4566fc2f1e9e73009e0e9c92a21d368432827f27114ec86426b3cd1f80338937",
    "signature": "0x991eb09f63558854e4e7f30d8f7257306c5cfab939a9be44fb75d1b1b98d208e7b1e094dd8c6d559f2cd431d861a8148dae3c8f5939f4bbadcce0c7b89dfca061b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}