{
  "manageEntity": {
    "action": "Save",
    "entityId": "376310853",
    "entityType": "Track",
    "nonce": "0x238f987fb7d4d61297e82cff217efc36bab73e9b049895ee77f51ee990c4d167",
    "signature": "0x628ff4f7e7560ea0c9b30d5ff326555f1999cf6415c85f61939fde4f3d9ffecc2361722f5c24d87a06808fea9cd6dc3cdb9b2058d7174b9fc9a61d2f7363b5991c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}