{
  "manageEntity": {
    "action": "Save",
    "entityId": "929049790",
    "entityType": "Track",
    "nonce": "0xa1df32d0d2b52a79073de0fe9956c3da963d0530c8c329a5de805bcf04bb112d",
    "signature": "0x3025cd68d5f98363e3453f8434a14ce994e9e9bff9abe39b5c8a29e8b79247a410d613726f698b78a0f31c08511e03cf5e21739c3c95beedd185e3c22c5a6b811b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}