{
  "manageEntity": {
    "action": "Save",
    "entityId": "349129740",
    "entityType": "Track",
    "nonce": "0x1ecbf486684816f1d7417d07166f7e21c6413933b394f6e029654e411ead5d89",
    "signature": "0xe391cfec12e8a0cb102f23024f5c4d35384f68e50d4b8cccfa66dbbeadcb74354e8ffcf712c3c5436d80049dfc973cbc9753415ed493f9470aefc2291b0a29d01c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}