{
"manageEntity": {
"action": "Save",
"entityId": "1450553762",
"entityType": "Track",
"nonce": "0x420f61fca8736a4e114a6049d83df9874c730d8c08d5ff6c228bd4b37cf0538e",
"signature": "0xc11244de3bd7c3c71b374f6914eec363713aa4be2e42ac9d242088bfca2387675b93d98ec9bf8f22ae61045d62f5064c8144d5142a090d99c2cc3a5964b14fdd1c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}