{
  "manageEntity": {
    "action": "Save",
    "entityId": "705765",
    "entityType": "Track",
    "nonce": "0x7d5a70657d611183bc8b5f4d33805e9bd93b741530591ac4bb0450a8c17f04d5",
    "signature": "0x2ead7538e6ce3f1782d909d9c6c40d6581f1d53a6bcc8ea3c6cb91065e38e7772480bdeb44040797f920947611cc45359b6576cc4ad7e5e023131cf8f2cbe3ce1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}