{
  "manageEntity": {
    "action": "Save",
    "entityId": "178203",
    "entityType": "Track",
    "nonce": "0x1399fb86c0e1f20482f6d3f5c862983db74cf93db3000033adcd03089c574ddc",
    "signature": "0xa795d2a4579d044bb02b7da2ff8b51858555b0731c25ff72843bd35d36c56fa6230c0ea9aefb44081bb2c9fd1a679faf1b12ec44cc75c277dae3f98b89730d721b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}