{
  "manageEntity": {
    "action": "Save",
    "entityId": "178703",
    "entityType": "Track",
    "nonce": "0xad013cdabf6030391b5f9aa7c5082a585ffef8a1169016bbda60341415ec2b30",
    "signature": "0xd45286ac092a50e990c923d20efa124fae08516887dd26718717794242ad0ff4234dad04fcf721fc13b28d7c322a8274d0d6d35308f921ebc62f36698610f5d01c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}