{
  "manageEntity": {
    "action": "Save",
    "entityId": "88012",
    "entityType": "Track",
    "nonce": "0x71875fccb86385036b9ce0e5488f44798fe317bdbaaf2e21d14981200c4137f4",
    "signature": "0x0a71275627da970a1e8adf5a0a61e27475ee27e4b0c2847090a2e044c4a58db176c1209f346bf470f183cec452c75dae20886267764a306f575b0df62d4ffee41b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}