{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312443632",
    "entityType": "Track",
    "nonce": "0x1b108ab0857f0cb11f1acaef8db2f60e4dc3a09dab0aa9f20f1e7ae322b933c1",
    "signature": "0x595a8cfb64cf004c90627a7f069f78be8df995fb5cdddd768d4c12cf0f4b317d105c9605767735c15b12597d5ddbccae4d7c3d9614274801360a76f96d6b53ea1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}