{
  "manageEntity": {
    "action": "Save",
    "entityId": "1188332121",
    "entityType": "Track",
    "nonce": "0x7e356096bbe5e7e64f39767359531d30868c24dbc3e2a29953ae6689bd27fd1f",
    "signature": "0x8f8ffa260010a2573ccea82ce9e97e1ffc5cbfcad8da025fc41e4eb5da498d0e726224d63c4c7ad32735199a930fd41ac64e5a067cce526b147375e3c3dfc5e21b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}