{
  "manageEntity": {
    "action": "Save",
    "entityId": "166913",
    "entityType": "Track",
    "nonce": "0xe1f5cf0b83e71632b7d5d02dae0a5a0bbcd1328372c8890c927186b6b304e1ba",
    "signature": "0x5aab699f2bd5b8656a520d8056c16f17348931a8300051b5d9daae737c18db5e2693d3bd3e0fac7c875857496f7b42dcf74d2a32723218d3339426bb666367961b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}