{
  "manageEntity": {
    "action": "Save",
    "entityId": "1896189646",
    "entityType": "Track",
    "nonce": "0xf330da8daf541cab1d746b6dd59b33dea349d5a64ded24e77f18779ccff292c2",
    "signature": "0xfdcd7b76fc60c4587b8269d50bde49fbe830cd3ad51f21cf87c234530586b6fe496173cb983785a6eb417fa7f5d6fd4efbe3348824a409042ba45e70067331ca1c",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}