{
"manageEntity": {
"action": "Save",
"entityId": "1912641587",
"entityType": "Track",
"nonce": "0x97e6590349d370704dd024887409935e027ab8c4ae8073fc6494f9a8a5db8af2",
"signature": "0xcdd4f723f74af9d76695402dfc9bb15f8452a339e12d38c805628b327c576fb87243dda0b5fc72dfbf9bcc395345e72b40e164e7075e0c7e548902fb95f5a4571b",
"signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
"userId": "817564020"
}
}