{
  "manageEntity": {
    "action": "Save",
    "entityId": "88014",
    "entityType": "Track",
    "nonce": "0x75487f14cda8c10135590a2d6575a1f951e0278f66fbeb1eaf0c1e96dfca51ce",
    "signature": "0xe7eea9d403fad8720000159576cc0638adfa920faf5f5ca7362a17801cc110361f739b451df6c9c93c5001a91fc90a37de58e889c7607da418a0de9e7c203fda1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}