{
  "manageEntity": {
    "action": "Save",
    "entityId": "1651888872",
    "entityType": "Track",
    "nonce": "0xc84a3a795826033e493ac133f4fa0794591e1d2664c8f23de9e12c2a34facc03",
    "signature": "0x5e2ddc9e813d353d0f42c6aacd78cb985bd6c5ccd82b1a8e7c690b8a6e8c2a2537077830a6bd49658ab34c6a1384856e30a01022d3464edc966f34fa65ba7c391c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}