{
  "manageEntity": {
    "action": "Save",
    "entityId": "2109767863",
    "entityType": "Track",
    "nonce": "0x87b29a7edd3b75a7e3f3570182d53051f3a2db0473a4864f45555cde85d21430",
    "signature": "0x35b0b867f3794f263aa20adfd9466dd050295074a2f14adc3db59bb6649bbfbc7a6cd676acfd2656694292cc8871fcf369d4f2aa3707b5fcad9082a96feaa1721c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}