{
"manageEntity": {
"action": "Save",
"entityId": "2086490263",
"entityType": "Track",
"nonce": "0xb75864b39209404cfa5893b71ac39bb4e755702642ae00bfecaa81f749c6d4e6",
"signature": "0x87b6b4a0b7387b275636e9675a9df06d75b00b222dcaafede8786a23ffd063626448a79b5289dc1f57852735e2807c021e385f16bdb964888ae79f7d16e7ad101c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}