{
  "manageEntity": {
    "action": "Delete",
    "entityId": "657408",
    "entityType": "Track",
    "nonce": "0x7374ab9cd90fa22c793b3738280c017cb33f9fa68b014b0ce820df6f937bee84",
    "signature": "0x1e9e523f697181ec232b8bc8c7694cd001c5c98547a70dafe86fbeca24b9d3c25d643dd834c42f025c7157a801b3f84c0ea4697b56b23edf5d25b53ddb3b8d5a1b",
    "signer": "0x5957c34011bed9D75E94CC7A0Db50fC93b787F5B",
    "userId": "334946"
  }
}