{
  "manageEntity": {
    "action": "Save",
    "entityId": "1742039101",
    "entityType": "Track",
    "nonce": "0x57e2ad0c6b17314035288084f737f8988425e3b00c6ec17d964ee3c2eb98e86b",
    "signature": "0x2a423e2fd2febc397ae293f49579c685673ad9d1cbced73c8957dbfbd2d91bc7177a5ba0c77ff7d2f33a2ec38ace73a9d005ab020b6252e3a05fd381d11b9f811b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}