{
  "manageEntity": {
    "action": "Save",
    "entityId": "54025643",
    "entityType": "Track",
    "nonce": "0x2ac130371e21f0c9925d34020ba0a1c29f44ed14970a55d50aa746c2991afb56",
    "signature": "0xccabc71e7c8d6aab8751ddc351a6d696b5cc4d698532139b1d062f2791c6fdc9465308f2be1ae90a99a1354174bb8d34388c2409f78014fbe9c54826adf2a0e91b",
    "signer": "0x1342B371960FBdC7Eb015f7042bE91dD5db749c3",
    "userId": "56493313"
  }
}