{
  "manageEntity": {
    "action": "Save",
    "entityId": "1811038672",
    "entityType": "Track",
    "nonce": "0x9b75d67724eda57189b81aa1fdb6a1dc97ce26828c7acbee61f2b70d8a97c016",
    "signature": "0x436ed0ad9d6f7970aad7c27926f5a5b5aee15d232478e0ed82ff57d75263b3c865ac3a336a8a1d4713fcb32a9a3cef04b9e981d90194195a0a5bddfdbc7b9c391c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}