{
  "manageEntity": {
    "action": "Save",
    "entityId": "1196681918",
    "entityType": "Track",
    "nonce": "0xfadaf41539d4117d7932217fe37519600bcd22f7e15ed152795ccadf1670ef97",
    "signature": "0xd51937f623327409b6e26795778ed962bdd825bab5a220271fffa05f837ca4365a49624c7b60fa6a88cb8da2d06efeb08c495603bb8e451d0f3356feb8eb846d1b",
    "signer": "0x0BbaE3b1B763858507f1A953DC2f9Ef8343268D5",
    "userId": "307156675"
  }
}