{
"manageEntity": {
"action": "Save",
"entityId": "345195100",
"entityType": "Track",
"nonce": "0x2df0b7c2b77f42621328ad56a0aac9f9d03a9b1b73f59f6ae85f6d8f35f30c06",
"signature": "0x658608e5a4a224d94b1a8111dc9391b9bf45b754067916b6a8d018d09e03e4047a51108061b6b52becda366cfb79f3849d5f5e551e54bd6466d7e1e90b7317621c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}