{
"manageEntity": {
"action": "Save",
"entityId": "1303198483",
"entityType": "Track",
"nonce": "0xd87368dc380589bd35df244a267087d886b1df86e33ab729a7dda65024b9e33d",
"signature": "0xe5d62a591e9e98dd6e9cc938f15ad24f2e78727c6fbc4d83dfbdd32821f2d41b6b0059a7ce9c8ab850949ab41c77b5c1e3f60bc683b99fd72ff5a722eb1b13061c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}