{
"manageEntity": {
"action": "Save",
"entityId": "762889791",
"entityType": "Track",
"nonce": "0x6b744ac99d40bdd802c29489397982e3ea7e3d6ee04ddb6f4c2f0b4afbeb6011",
"signature": "0xd393e79c601d00f75d4207bdc20072da06c1d93cf8e03c6788dd5bea7a779fdc757901bd47855836c780ae4f85ef7743b4d62fbc1ccabf0cda6654038b80c0641b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}