{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132032087",
    "entityType": "Track",
    "nonce": "0x9164d2f4006eaf2b0753264c610579f4d2de6cc1d5e1b662d2e5cc5bbad38b9c",
    "signature": "0x1f5244f22cbc6a4b24232f1d365412a5790f3734397f578ce66a43e0da1e053d07ea3111d784772175b2ad704dade497154133b0661519271afa8706c19d4bcd1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}