{
  "manageEntity": {
    "action": "Save",
    "entityId": "1719096385",
    "entityType": "Track",
    "nonce": "0x1fd5eddf2384e7fdf17557bc30633a184eedaa41c551cff5723d0659cccc3865",
    "signature": "0xe7b63e7cb5e6b42cd62dd880308b27fb31b2ef5433c8e3593d892e286b26e48544917197fbdd0c85d5a3466e4f402f9a64679c72075fab99dfb643d7f78b5a4d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}