{
  "manageEntity": {
    "action": "Save",
    "entityId": "110686606",
    "entityType": "Track",
    "nonce": "0xb0fc17c739eaf55e99c4fb38cc27e4f878e770a6abb98f7f70e857b906f19c19",
    "signature": "0xdda0d1da9dc612054e512ba34bf99c65041a734747a86c3c60bdd999d32bddb031ee8d92616797d526af2a73bba129e046276151a225bf0c3c58728dbe1575b11c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}