{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085365991",
    "entityType": "Track",
    "nonce": "0xef24440c8943a4075bc41bd9486d607f49324677b541a88935814bb7b30e3726",
    "signature": "0xeb84e06f46562c59898b4927bea2cf2327c289b6bfe60a783973d511a845c5166897a3597bce7ce173f21b4ac0d3693cd2c17a3bfabfe06c0b104cc6f23b17841c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}