{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009896374",
    "entityType": "Track",
    "nonce": "0x3bd7f3d992fbd06546014cfe061ba9e84dd7796073a850ad7c2469f8ef85369e",
    "signature": "0x2f782305dd588c9ee42b111bc6b83496c172da2704f846d8084eec075df023bc1c17a90f6cef16b28ed950b49399517a2af57589799f327216d3358f679021061c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}