{
  "manageEntity": {
    "action": "Save",
    "entityId": "1541682253",
    "entityType": "Track",
    "nonce": "0x4a1fee9ab8ead708dd312f328bb11217f11da29f61506ad87b3c0261316f1508",
    "signature": "0x60a9682d94fa78f4741b6e0ebe8343be501a396b1bf492a194e25865c50ad20c1752cecf8e5471d8d2bf5c3f806a8de3f9093d793be1f00923b37555c05b162b1b",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}