{
  "manageEntity": {
    "action": "Save",
    "entityId": "436223",
    "entityType": "Track",
    "nonce": "0xe92294233a17c8cb63be545f9037f7d666721b33f4afa6ad2ed59cd45d980438",
    "signature": "0x62383d2aecc6e632dbc9b287bd954a0546b426046b5ee77f4dfb939115b020b563dc12af5734b66ed8a4a7a7e6b7902449f93e6f73187a0e42147c9d277d09c91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}