{
"manageEntity": {
"action": "Save",
"entityId": "782544571",
"entityType": "Track",
"nonce": "0xcdf6aca0552a7576aee60282d652a5b5540d83043c5168387ab2a0bef8ed5593",
"signature": "0x27caee144b6e784c746ed977398df7a195b1d7fe03ae43e82b05ab7cd82d0fc5441c3a4d0855f3103ac7029093561e7f68de48bf6bb292a1c81f2f36cd53462f1b",
"signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
"userId": "354908"
}
}