{
  "manageEntity": {
    "action": "Save",
    "entityId": "1719052248",
    "entityType": "Track",
    "nonce": "0x61888ba3d92035aff48e507a711e31b5a70f08eb0591f5b6d26f677a0cbd66c7",
    "signature": "0x2a3dd0ffc89ca7232c276c504eb27fb533c9e4b28eb7e4bd3da7460708e64f396a95bc3b194979aecedcba36c5f0b1495b596eda30ec2239a0ecb0c423ebb7841c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}