{
  "manageEntity": {
    "action": "Save",
    "entityId": "1675370113",
    "entityType": "Track",
    "nonce": "0x5320344ce64f943bc33c5f096889716eb84b4684056c842988bfcf4def7ccc94",
    "signature": "0x59a0057bee33277e63155b9d952e1c2b57bab6f5d547ccc6d83c7a7e577141a05ce564317c2000b1db40c2607fc962cffe476429a736604b0c5037426539f5f61b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}