{
  "manageEntity": {
    "action": "Save",
    "entityId": "117141502",
    "entityType": "Track",
    "nonce": "0x5a06d53b44a4b52f38f9c25c8c1fa68b6264b9b4b9ef40e5945067caf46b8f74",
    "signature": "0xfc23cb5888f616be72e2850e10b765194bedef753dc16a4850f6aaabd4a83b7a20c927275e944989a57fff6415a5d75514443bac199f96c160de953252441b591b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}