{
  "manageEntity": {
    "action": "Save",
    "entityId": "796541742",
    "entityType": "Track",
    "nonce": "0xf387e8c96c49a7e8d23c5bf7cf60b11d053bf8cea5b6bb054e785e8e645955eb",
    "signature": "0x51a74afd362919765961a75035159a7c687e2155307da04d7ec93a3243d42ff471f10ded4a3d35b50f2f19d12c1745c36094a4015034715ec6385300de5e93de1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}