{
  "manageEntity": {
    "action": "Save",
    "entityId": "1154796346",
    "entityType": "Track",
    "nonce": "0xc4e17689f742a3232289ad6a1a8ed8e9c2f417c09a07678a6bc732a9f6247c5a",
    "signature": "0x3b6d091a7639c510a951c524ea9c1e43c19d1e37f0d96e008b1e46ed7de4717c4c2010ec840c23c0c309bec4ed44e06efb6424e09399b758791b7e3fbc18b58f1b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}