{
  "manageEntity": {
    "action": "Save",
    "entityId": "63192",
    "entityType": "Track",
    "nonce": "0x3b1fb18c31deaf885094a4567edcb3a9e89c84d6727c9d6cf7be4043a36fdad2",
    "signature": "0x7a9df2370054e4af8e091fb1a33e98cea27b0debcdcd80eeb2ec564fb5197f1a7ae9efc32515ce037d1d2784b9bc8a5797935669581170a561910de067fac4ad1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}