{
  "manageEntity": {
    "action": "Save",
    "entityId": "1480945475",
    "entityType": "Track",
    "nonce": "0xcc7b983c8ff7db3002e1bfe202f38179811a5da0ccf7363a16e69967ba04ee37",
    "signature": "0x99a294753afe79f2db1ae2163abc67c817855576377962d587d9fca1f2a7eac80e687b1ac3a8ddcebfb2414d211be599f0efae0beecb9cd1d1fa2d440a4c4e521c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}