{
  "manageEntity": {
    "action": "Save",
    "entityId": "898296703",
    "entityType": "Track",
    "nonce": "0xd5db68072efd428f969927db08ddb1c24eb1d5f25b8dfdcb401d277ffaead4f1",
    "signature": "0x34044ab0573dbd907e67557b444567cb3dd3fe5f4ce39c518b5379678c2991704230db51589a7cced61feb520a4d21f6c55ab5aa8bab25cbbd433449637b05de1c",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}