{
  "manageEntity": {
    "action": "Save",
    "entityId": "405925331",
    "entityType": "Track",
    "nonce": "0x66ae0231f40bdfea5258ce1d508df882f98c872da18e770c88db3971e29b1f6c",
    "signature": "0x11e06141cbfcc7d7bab9441023594f4b79b0e01d0391924a6a13894ee8b48a215f85b2869a2c687eccf9556d2f3088d75bd7cebbcfcfe97c90d6986fd61527d21b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}