{
  "manageEntity": {
    "action": "Save",
    "entityId": "1112417",
    "entityType": "Track",
    "nonce": "0xfb286e21df1a457e57c16728ae1d9a33dc2d72d4d149f35990d0edcb054e83d8",
    "signature": "0x1d8c977ddac71fd35544563a2facaef2d792c4af5ce11ae3009c42c531add0cf34f47b71b746a745d961a792b3db41c3e3e31cc0db6884dad32997f9828a634d1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}