{
  "manageEntity": {
    "action": "Save",
    "entityId": "941028861",
    "entityType": "Track",
    "nonce": "0x9b31ccff9c3a819f84de2c36f0902d4130780875fb0fa10fc7145bcf837cb8ee",
    "signature": "0xcf6f4301dd80be0a83768c8a3ccbae863b6d047d2355cfdcc5f6b37f5f7f23f70822fb4e778eb2decedca2bdc25b8930246f619ac11c131ab8c7f8766d7eb50e1c",
    "signer": "0x88ad765B72fb060B3adbae1FA44A6C64722E1781",
    "userId": "236177"
  }
}