{
  "manageEntity": {
    "action": "Save",
    "entityId": "1185278169",
    "entityType": "Track",
    "nonce": "0xd2c874ea2fc381c26fb131f0f56457001f9053ca696ef7803d1b241a63dcd164",
    "signature": "0x3001bc0026e6b4e5b1ab3374550d5fd6e7afa79e816587c371b05fd59020fec331ee9b6eb61d01344f81f139d18c80e428c0cba852733f4a924bbd57eef5c2481b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}