{
  "manageEntity": {
    "action": "Save",
    "entityId": "1331725075",
    "entityType": "Track",
    "nonce": "0xf80d4b31274742775301b35cb6b0838cb23b80101fe3bf8a13dc112dbf4a08c3",
    "signature": "0x36a68c0a3fd3d7fdd82da2932230821504898c523bce0a9b945979fa083493d323542277b0b117d20450bd251cdc0ac643f4dda7f0f2d5e850740e617afabc5a1c",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}