{
  "manageEntity": {
    "action": "Save",
    "entityId": "1216755434",
    "entityType": "Track",
    "nonce": "0x16e24035d95503e4e7ff2558875350d60aeff6875224ea0c05e725da4f62e4a8",
    "signature": "0x153d0a3361a0e5920e9277a6b1feb5739e8dd0471edaec47967a8d4d97fc4e182e4776fe427ca13f5651591e87f435a21c95c705b784d368b60e964f756f36b91c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}