{
  "manageEntity": {
    "action": "Save",
    "entityId": "610933838",
    "entityType": "Track",
    "nonce": "0x9f9dbb761af10baa42392806b827d408679d7f50daa0fab118176a624bad6718",
    "signature": "0xfd1b981bd39b3587acdfcbefeae90a942d4451b0dbf54f09ebbea04d0e5b441b3dbb1213e0a9e21002d51f5aa6e67e016aa59ee46d256ad7fe1b808ba4d820611c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}