{
"manageEntity": {
"action": "Save",
"entityId": "443386953",
"entityType": "Track",
"nonce": "0xc3816b65155cba4828fcdf9d765c12455ab6a9f33f818977a29d0ba6eef70f7d",
"signature": "0x843590a0d9c8027c8687cb9ae910ea05af02cb75a9fb2efc6d9297ac12e5c962138e73531a89d8b1be76e751f7a154962588d8a1198266ca6b6f4e1d5d2eaeae1b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}