{
  "manageEntity": {
    "action": "Save",
    "entityId": "1883394996",
    "entityType": "Track",
    "nonce": "0x633ab0c91198023fee0718caad9acf474ba2a43f5a2e5cce73bd7eb698e38276",
    "signature": "0xe45e656d6a0e1c7cac86d1281ef91e13dbb2b72bf5ee452ba2d2db31619a52ba45baa50c41455a01f5a38cd2add62dd8f315927934cf39b904821daae20108531b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}