{
  "manageEntity": {
    "action": "Save",
    "entityId": "279270227",
    "entityType": "Track",
    "nonce": "0x7155dba671a6b698008931ffa7c16012a561754623ec65cc27896541c9b0d8ce",
    "signature": "0x28a00dfa31f8ad7d9ebda180f451d825b2c0ec7558601c2d227639c92264b44614f52a8e71d39f246b8a707a5a698bcfc8e5b50bc0ae3511636042f7558f76761b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}