{
  "manageEntity": {
    "action": "Save",
    "entityId": "103601186",
    "entityType": "Track",
    "nonce": "0x324d57552642bde3f4f26c0ed21875a71bc86145474c028001b051c0bbb8f0bf",
    "signature": "0x075aaf34e1d307d57f2d69ee839590462a39fd32db8c1b758d87c8c419c86676446f772915182a190de3c2b3fd585e609703f52136d8332bc07a14050ccd07831b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}