{
  "manageEntity": {
    "action": "Save",
    "entityId": "885721265",
    "entityType": "Track",
    "nonce": "0xbd7d72262ee5bf4f8547ed9bb63e7d3c36c22c0e7dd4d5aec99df868fd054ecc",
    "signature": "0x496449775e9b61862ad831c05a9cbd1048ceddb4bb83c707bb67fbd9113f249177c0ebb3fb51e02cc7a62777974d9d06c0fb64d78b16c882ab719251ec167ed11c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}