{
  "manageEntity": {
    "action": "Save",
    "entityId": "1524305171",
    "entityType": "Track",
    "nonce": "0xaf989b434d4deb99a306d771ecaa342a69c37846e1edfd849d5ba06313c5fee7",
    "signature": "0xd528aba736af0ca896fa0306d0971e7704c59a583417151e47c46ccc9f00fb742b02c2b1258fe968f09311310df79b6c9f53b4606d36df87a8f91e892dc837ea1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}