{
  "manageEntity": {
    "action": "Save",
    "entityId": "413357446",
    "entityType": "Track",
    "nonce": "0xdfdc18cd49d26cb9858bd46e7f4506495d1c1cbab2a7282de1f06a13148385d2",
    "signature": "0xcd08378d67494542a58f844d0f628f1782b2f71bbdccb0513224766dc74837615444028512567394e70ed320d4970b859635a2a4dc374d4214178f16a6db90a81c",
    "signer": "0xC59f7055B078B1Ee57c271E19BE5Dd7033FD64f5",
    "userId": "950751701"
  }
}