{
  "manageEntity": {
    "action": "Save",
    "entityId": "1444831172",
    "entityType": "Track",
    "nonce": "0x8b4611bd3ef392b122c59ef623095e8fcae642ef704cc35ee3b8a1c69acfe8df",
    "signature": "0xfcbb24c17ba866b719d89f5c9b78d00d1cdb7d4048ecada5440091498df200333f3315ed748602600783b6b7a50228a368b1768ac586703691a7ba00307388aa1b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}