{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081758927",
    "entityType": "Track",
    "nonce": "0x153699a05637c4a40715f30e1835932258178e55d6ea1a70c0aed75e38d0c566",
    "signature": "0xa1232626f8b0b4c5b97bb1ce7c48040ef1d6c964bd522933a229ffbe6bd1dcad67e7295abba05d8f3e6039def1d08c52d3882ffaa03a4af9af61f33542703d801b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}