{
"manageEntity": {
"action": "Save",
"entityId": "446856402",
"entityType": "Track",
"nonce": "0x3fe4b50b386e5a69722f4f10235ce8b72cbad7154c8e8990a7d762190fc2458d",
"signature": "0xd242c029a986b950e71ccd7a9ba29c12da286109d3125343fe58019681b9a2b73d72610d491f26286452c525d2c44017febfc7256688671e5fdc3cfb8a71c7da1b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}