{
"manageEntity": {
"action": "Save",
"entityId": "1285198181",
"entityType": "Track",
"nonce": "0x189162295d527a6b550e622579d93118d4574ea7a4c98ba402d4bb2ea49ebb7e",
"signature": "0x94fe51c2f1cfc8e044b5cd4fe5dd0aad000d7d87f6a4ce9b30b1da914298102e5d4407a6b0f446a5de4abf8a6db8e901c87f6f0c5780dde0ae843b68d6d33daa1c",
"signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
"userId": "456716469"
}
}