{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088211",
    "entityType": "Track",
    "nonce": "0x088e642167995cff7de2606b89e7498b90efdec722d46e30c1fbdc10e380ec79",
    "signature": "0xa104138aec47d6fc5dbff09beed9a5c654ec430326f35b2adfbb37055ebb79931fbfcb5887ad1282364a814354cf51157168e38c7c205ff8cfe4ff9ce425af271b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}