{
  "manageEntity": {
    "action": "Save",
    "entityId": "1841956380",
    "entityType": "Track",
    "nonce": "0x3a58229dfc2de5b4e8b713050bf95dc6cadf95e71cdd9c3c6c6248a3a23f162e",
    "signature": "0x836eddcf805125abb47de5f5a6701612482c1dbeefb7cc6633aa9df825106d182c5bdbd1e1195935f4037b3c39efcb49ceafaccee197f5c284f1a933bd0c6c521c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}