{
  "manageEntity": {
    "action": "Save",
    "entityId": "1188263724",
    "entityType": "Track",
    "nonce": "0xb2ebcdb9bdd58edb176f5c4a4f61d0cc9efed6868e0966bd269ec8d549c72d6b",
    "signature": "0x86708eedc7510d106dc17e597884e203f499c3383b8d4266b069c2453dd21725301b9a6daa0d653c6e17ad82aa96d2cf71f897b5ad2e7c8acda3de963cdd85bc1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}