{
  "manageEntity": {
    "action": "Save",
    "entityId": "109037",
    "entityType": "Track",
    "nonce": "0xd118d2e47106ed04e920ffbe8790065c03e0d60b2101915cd9d4784c7fadda73",
    "signature": "0xe78cc0c7d10f194f1fca46231dddcb56116a2795af73c87bfceb00ed15214cd018f4f1433e8dd7fc2b39806a0aa2a48db686bb296a293a1cf2422db713016d911b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}