{
  "manageEntity": {
    "action": "Save",
    "entityId": "1298795205",
    "entityType": "Track",
    "nonce": "0x480361fe7fe187c041cf5676db4792862dafa81f8731cac780fa081242d2d1d3",
    "signature": "0x3dbe361e1df337f2d556ce61d9187fd49114b5bf01665c3ee5c0c3b7f6ddbfb2039daaf104bade4ef84b1a277bedc3e4dbc9f43a21e4cda3461e461cd7ff7f8b1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}