{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993073568",
    "entityType": "Track",
    "nonce": "0x4a3d7f1408d7b34129e7724c04190ff6ecb08a71a68074682b1d1b818e64769f",
    "signature": "0xcec308d802f5bf0cbf381961a4d8ccb1bd6dba427a8e38f6685c30b0a39a2ac914d2f4af0f4b263e983a24cbf74a917e7fb696187bb6246839bed528ef6d24c81b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}