{
  "manageEntity": {
    "action": "Save",
    "entityId": "1153439626",
    "entityType": "Track",
    "nonce": "0x48b4ef125d4086d2c979882757ca5ff010e1c82ba161bfaf6557f7762407da09",
    "signature": "0x94fb456c0a0eff57767a8adc973217dae7326e99c8e05b1db00e3b8ff963e01c16cc408e06105f8a10a55b3bfc3439fb24b48ad71c6b40639e1f962ea4d1bd411b",
    "signer": "0x0D2c1331F52a98aF1Bd206E3C28062E717CA9E51",
    "userId": "597927803"
  }
}