{
  "manageEntity": {
    "action": "Save",
    "entityId": "914228789",
    "entityType": "Track",
    "nonce": "0x14648d13e1c195e3451b4445b90199e3288ce96a7bbd5eeabf467402712082a7",
    "signature": "0x20b304404277d7377ce8a9227fb3e184789513089023f4bbba04ee40b00c3897789bcb06bc24a8ed034a2a852c63704ec1bdba62069f492e1df511cef22f5fbd1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}