{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825863409",
    "entityType": "Track",
    "nonce": "0x6675f25721494534d0b3819bd129bb52229bf2daef739734b4a7118dc55e1326",
    "signature": "0xa5cff55efdc46e6993564d51aee6d349290249089d070f06f72a3d5ad18c1f072e753c9f17d77534a2cc08b5bf43f1f6a6a97fd975e07bf273d28919170f40241b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}