{
  "manageEntity": {
    "action": "Save",
    "entityId": "240307",
    "entityType": "Track",
    "nonce": "0xf5a7e07bb101c86ab0aba20c4b0408b7210a688858b38785816f1adcc33b1afb",
    "signature": "0x77a2020643a3e9f6709c06264367a4a7df4b44ea83d5af52264af91912e23485649804ee71505c985e233a4da996c37ad794bfa3d4d7f101f99f853fc54a51ca1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}