{
  "manageEntity": {
    "action": "Save",
    "entityId": "698230746",
    "entityType": "Track",
    "nonce": "0xb111857f70dfe3e0723b3848a7f670c55e64bc61e8b38261133f622e62d1b0e9",
    "signature": "0x8dd82c47969bb72cb8e770f11dcd9b4a6d58eae71c78ecb984c759912137532e3593dd1650c1e0f2425bb305dc80fd9174eca1564e66d828e130d49e966da5271c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}