{
  "manageEntity": {
    "action": "Save",
    "entityId": "540180",
    "entityType": "Track",
    "nonce": "0x9febd9c2cd9cc8a0e3329eaddbfc39b246327a4e7891bbe03558a0b9ad593162",
    "signature": "0x2329653268fedc24f20903634f14c00ce0a80920c45c1bd6965db57f97df79a1394296c63cde1ee4bb063fb21203cef46a6194409b934128f602d681e980ed831b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}