{
  "manageEntity": {
    "action": "Save",
    "entityId": "1126922",
    "entityType": "Track",
    "nonce": "0x6c3ba71a2842d33e75b06afa1cc5179ab460d5d7b27e242675023d4fd865e2f4",
    "signature": "0xd1ea52405ec5c81490d8ca1b140ee0c331da69ba92353caf46c0645c3663d2a71cf4e87e5f50c10c12fd49d18de24a41c75ce1f08779cbea810a469e21e901da1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}