{
  "manageEntity": {
    "action": "Save",
    "entityId": "196282",
    "entityType": "Track",
    "nonce": "0x3e259b93b93293596fb597d6838a357dec458b9121776067084adc15582d9da3",
    "signature": "0x63610f6fe985412940c32fa4525dd00a3829f4532d8eec50a8e3a5882899da4c22c0931c360f01fa2be5f27d389eec35af925c0390e115702822ebacdcb3abea1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}