{
  "manageEntity": {
    "action": "Save",
    "entityId": "653548105",
    "entityType": "Track",
    "nonce": "0x5fc2ba1e05ecdacc9be57c21bcabf12de211d0e3c7fe4257cb87f739591422ee",
    "signature": "0xc96d3a6c68efe5562b32a303c87d381f2eb6bf86580ca068e655c693281ae4256ef9be90d134562da3ffa31f8fbe6db461eb36166abc8092f8e0addf8864cdb01c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}