{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114601",
    "entityType": "Track",
    "nonce": "0xd584f37bb864cc20430d591715ae7aa68217652ff24ef4d2830101639ab599d4",
    "signature": "0x3716a2792d9854f4bd13c1cdbcaae55b87f7a3a1680b1c66cc90366b2adb12987fda4e779a8de814c85c22580b7e1692b86d9540f77f0a0c82d0b9cc6e99ecc11b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}