{
  "manageEntity": {
    "action": "Save",
    "entityId": "205932",
    "entityType": "Track",
    "nonce": "0xcf6d8c0b153a93f0922b694e33bef07bae53aafd0a0a9073bafda34465cec4fa",
    "signature": "0xff671ba68c3e26041c92d1457b4f6fb1b1641e2a7980a5181502a4044780ef826676ce0189a5e3113775a5d15562994fb9eac8cd7d80cbfc77a81e923cb58f531c",
    "signer": "0xE83eb37Adee021461D9d1A141Ab395A6CE0B6299",
    "userId": "154583694"
  }
}