{
  "manageEntity": {
    "action": "Save",
    "entityId": "9207852",
    "entityType": "Track",
    "nonce": "0xf16b63596fdebb94c26e202ceb12a3093f0198a5edca49846c3b1e86d319824a",
    "signature": "0xf2082b4261e365180030803ea472cacced9e81cc2cc65c159ce32ec09fcf85f373011af001470a26392327df1249cba2e865bf7c858306f616f7be5fcbbed2631c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}