{
  "manageEntity": {
    "action": "Save",
    "entityId": "1007516",
    "entityType": "Track",
    "nonce": "0x0ac89ce59bd38fb3407c66932cf3059909af02308287a54947ee286b07b3fc05",
    "signature": "0x29f5bac5486812f945b22fe0b3476ae8371472f5fd5a155757cf737884f66cf736c29f253cecc3329ffe4b42b78d74a569dd278563f1755bf1151508a03010501b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}