{
  "manageEntity": {
    "action": "Save",
    "entityId": "241273",
    "entityType": "Track",
    "nonce": "0xd8a0469b762f1af6f3e4062d011de497dbb0d9363935b29e511ab2d8815904ca",
    "signature": "0x4cbb532dc7748e2a5c3497f84264abbdda2874010f9e7bf0e6a68a3994c813747eb55f045bfca1df7d764a3035d733d19b80566d1b1cd25c5431eae0c21e16f61b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}