{
  "manageEntity": {
    "action": "Save",
    "entityId": "175002963",
    "entityType": "Track",
    "nonce": "0xb5a0dd9a9c5ae317d573b9bb4cfc4455621f4798445398fbc25a4fdf9d8f2ab6",
    "signature": "0x97dfcb1a9f9f7f33d4b7155d33da9e2efb444920225dea798b4baa8bcfdd5b6422c856c61d99eac9490193cef3902576725edefbd15e139f5dd905d426e32d691c",
    "signer": "0x95294e8499c78AEbbC09c6DD136fA881446EDF2B",
    "userId": "791695051"
  }
}