{
  "manageEntity": {
    "action": "Save",
    "entityId": "25381",
    "entityType": "Track",
    "nonce": "0xfc323629484f4e4e1f579cbae74801cf4ab2e10cbaf7cefdb810a2bd6dd54f43",
    "signature": "0xfa1768adab406501680355d8cbc58242634a93df5e7b6afc2434a2eb638eaf76443cdacedad4323788c33161237bb86857b47356f8c6a8b5b10080a04a74e1281b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}