{
"manageEntity": {
"action": "Save",
"entityId": "1087403",
"entityType": "Track",
"nonce": "0x011732c53edc1861d2258af9c28ccbe2ea6bae0407093f6b370e99fc8990deb9",
"signature": "0xd7704799d9c460605b2eb21d35f787b14ae5ddeab53a0d6627c09392c1968a9e76ee9b03075beb8b05797eb8410d02444ee642979405dc89124897a4fd254f081b",
"signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
"userId": "486490947"
}
}