{
  "manageEntity": {
    "action": "Save",
    "entityId": "1494712089",
    "entityType": "Track",
    "nonce": "0x7456cf5591dd90e27a19621f8af421c4bca2ed17640b7f9141a88519cf808f76",
    "signature": "0x652aa48282570ec642759d8ab5d5bc868d71bd90de3e01c4f582d82b45db36571fa4dfde96780579376f8fabc5cdfe6d7de91611c76a7d35b3b9e2fefcae30fa1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}