{
  "manageEntity": {
    "action": "Save",
    "entityId": "43362023",
    "entityType": "Track",
    "nonce": "0xa72cd45c1092f0a69798560674aab8fa50f6edcc3cde23851f36f211a761953e",
    "signature": "0x4fc7f818d04ee449750bd6c9310a623bca76db537c48d2f9ec7ac7a3ad801d03357aa56d5b59f7964bf51c34917a8096ff404c42c5a2e0283e79d5e3928e24a41b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}