{
  "manageEntity": {
    "action": "Save",
    "entityId": "1817914172",
    "entityType": "Track",
    "nonce": "0xe7681f9b44988053268ee22ee95d2cdc76ddcaacf88735f99b33699a93692ce5",
    "signature": "0x5be4cf35eecf3e150ff7a4de195c7a3cc17d54fa2553013151904f5dafa236f210331c5b2785f02a1843401b0afa56a371c7699840d48018e9f23a1bf8ca7ad91b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}