{
  "manageEntity": {
    "action": "Save",
    "entityId": "196607078",
    "entityType": "Track",
    "nonce": "0x9248197c2cec9ff359cacb3342f80a9bd30b65421f5495e2bcd629a9e985c087",
    "signature": "0xe551896c0f709611cb3644ad84e00131a86b9b00a08192b02733c0d90c437a4135b8f80ecca87c0bba73685ef546b080d68fd20036387f7411a0c363be3fe3341c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}