{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181445349",
    "entityType": "Track",
    "nonce": "0x81d466287468aa173cdde662f891f0c68048116d57680f801d4df049675f6e84",
    "signature": "0x3f486ad01d1d8cfa3d5a59de114cf319f3f1b8bd41c6c9c379ac2370167fe1bf23053a5dbca628755f20c6b3f6f809040a1ad3450ee6c66b8f643e194d2cb64f1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}