{
  "manageEntity": {
    "action": "Save",
    "entityId": "1929065587",
    "entityType": "Track",
    "nonce": "0xa0b9fd2eab72a0513dae92c8651bce22ef889f3d7e11f0d085af068d69be3842",
    "signature": "0xa1f33e47ae9146d1a297902cb55742ebcb916c533382a8da31c456d1c3ed08f71da3c4c1e2a536409d9df66e33acf3eb9c3351c016b7b318effbb3666178b0aa1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}