{
  "manageEntity": {
    "action": "Save",
    "entityId": "71340021",
    "entityType": "Track",
    "nonce": "0x3253f07c674f1bb77c9b4f75fbb7e73fc6662298a16ff737d90a81842a3d334f",
    "signature": "0x5a4baf56abbbc2d39d9a424467b0816085c137db97602583a7a32911a44429e477ae355c5715e05d76ce21df404b25745bcaebc7aaf6d5c62fd4e777824ffddf1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}