{
  "manageEntity": {
    "action": "Save",
    "entityId": "1065528514",
    "entityType": "Track",
    "nonce": "0x38a48a467536a2416798f7c37d4573bb0591bc117cffb8636c9f84f710c3b7e9",
    "signature": "0xf6f5ed10b9a075574077901dbff2ffb925344eea8f6f46dc014da1d8c85777362a01d2fa958633c3134d35937d555632e86d9071c7ff7f23a9ce5bfbb5132c181b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}