{
  "manageEntity": {
    "action": "Save",
    "entityId": "1688327995",
    "entityType": "Track",
    "nonce": "0xd5c814b837ee7e43689b0e357b39166e477bdf8d8b60830bf1f4ff04f2bb00ca",
    "signature": "0x5f097cc7851cfc4875fff76cb2ca254771891d4e4e66d98d6e28593f37cb6b3f6a72c569903e767086c92027f3cad49be90e59cab2c258bc63fa273a2301c1d41b",
    "signer": "0xF3228Dbd579b45b584E9Eb05Ecd150F8C24E4ae3",
    "userId": "994013869"
  }
}