{
  "manageEntity": {
    "action": "Save",
    "entityId": "591468",
    "entityType": "Track",
    "nonce": "0xbae6c91326b3b11539c6b1e6885f55ce07a524dd4913db4e577dfaf5bb85bb16",
    "signature": "0x3dfce846bb905281c2b3c31f9288813be78b26afbd5c6d603a0527e561d013802e162c9fdc971f041df0ba90e3cd1fb9671d835ceecdc55fdad9f1e94057260d1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}