{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162569209",
    "entityType": "Track",
    "nonce": "0xe408c3b95ff85572bcc6a44ab6c1010a96696d50253f46e2519b621f8db167b5",
    "signature": "0xefb5ecf17d9540946c727d329338b4d5c4170c147676af858d600d318b51a5d04b9dd83a31886d8b560b23c5811027f9dc71657306ecfd1a56eabf76365b80a41c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}