{
"manageEntity": {
"action": "Save",
"entityId": "1879795454",
"entityType": "Track",
"nonce": "0x95aa52a2526d1d66ea7fe5db5791912e1861c94da08844aefebe143274171351",
"signature": "0xbf3fdeb7aa6011644854600686fa834d2e6d16f065c5f44aa591c39b379272ba652998814d4d2e0b8f48b157d57c2798b527acb7aaaea90178b989a27b6bd8121b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}