{
  "manageEntity": {
    "action": "Save",
    "entityId": "51351",
    "entityType": "Track",
    "nonce": "0x314a32edcbc5e56aada880f9acd8859152e54168f4f938a5507115a2751ee604",
    "signature": "0x2bb091abd3035c538275b6487c5a4c6d0b5afa788726c72e7982077a9445279420163f266b6dc0a66a86a4aee957973112dc3db9f44a45f0bbfe7debdf4ec0731c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}