{
  "manageEntity": {
    "action": "Save",
    "entityId": "2147229196",
    "entityType": "Track",
    "nonce": "0x6dce670462e345cbb7bed250edcd9b77b7e4972eb6f02c59f599220f3390878b",
    "signature": "0xa5014527e02f62a948536f4ebd48fa344baf5ba040ca48bf33c99f22698879546a3d7f010dc18466d2de151181ab3824f8894712b7bfdb1fda41f363cb2b2b541b",
    "signer": "0x0D2c1331F52a98aF1Bd206E3C28062E717CA9E51",
    "userId": "597927803"
  }
}