{
  "manageEntity": {
    "action": "Save",
    "entityId": "264604124",
    "entityType": "Track",
    "nonce": "1780773259309613130",
    "signature": "0xf095bf90f48a4b2ac9d5237f00ee32ef606deb4efb8bc19f99c1825b41f6b6902e937ed2888638738f8858bb19d40e9023f151a0071ea387ee09d1f65df21cc61b",
    "signer": "0x286E7ad8f9447D0112953Bdb1684A4b4192ECb76",
    "userId": "210545"
  }
}