{
  "manageEntity": {
    "action": "Save",
    "entityId": "195121150",
    "entityType": "Track",
    "nonce": "0x848a46bb688068a0749acebc500abbbb269f44de2fedd5f82975b0ef1203409f",
    "signature": "0x876ae7ce96bf0f0d2d2968325d6f93370c661b44e30bea705c621beb41066a9215f4b5a58dfc3c4f7700f284406c60284c7f76aeb776f2832b8a80a5ffad5a811b",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}