{
  "manageEntity": {
    "action": "Save",
    "entityId": "1416978356",
    "entityType": "Track",
    "nonce": "0x9360085f47e2bd4f82a4966c85068feee8cb33da0345aec4a2ef906ee95d7b07",
    "signature": "0xbe385c09787fbb120e106dcc4a40ca5b60820d14d2f9991690cbeeaf00019cc112cb793b6b1c356f8abd893b02329997db41ee72108a7cd36e4eef8051e4b70f1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}