{
  "manageEntity": {
    "action": "Delete",
    "entityId": "646366067",
    "entityType": "Track",
    "nonce": "0x1139e07a586b4e2b3bc40314aba8549469f58fc541d1007fa6191a33357652e9",
    "signature": "0x8a77f68738e2794716537a417ae50407cfafab0824cd756ead70f25ff2b2db261bd193af3af1c9f452cbd4faad2668234d9f0f39561b168b801cb123ddf207131b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}