{
  "manageEntity": {
    "action": "Save",
    "entityId": "2110434520",
    "entityType": "Track",
    "nonce": "0x5addd2946bf14ee6daad833b795b7e606d7ac638f06766ce88f138d1e9398ec1",
    "signature": "0xe8b48619572a10d0446b1a53dee6d2e69df2bc887aac19f361268b24a21d0fa55130706ecdb22f7687757ed33aba940fca14350e42cddb34971ea1a6c303ad711c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}