{
  "manageEntity": {
    "action": "Save",
    "entityId": "802825145",
    "entityType": "Track",
    "nonce": "0xae6e483911702b030e7cc5d5fdfdd5481d8d84e00ab352f54b65e6f7951f39a8",
    "signature": "0x3ca92060fc0f56815ea5dbc48a97788acf18b873dbcd046bbe50fbc240465d18747e58ecf27ae8e97d56a5d1186af64c71bc6f04ab054330802778a06ef890691c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}