{
  "manageEntity": {
    "action": "Save",
    "entityId": "176037",
    "entityType": "Track",
    "nonce": "0x6cf42ce9aa35fb5a80f759404c322651a5b696ac6212b6eb9c7350ffc4ceb05c",
    "signature": "0x2df17f54eb4cfca5484875df52e0006cace6d0bbf73ad60ed37d95af96b9af0f563caa2a1d20d0987b56ef2099c740e1b9a9311c4118ddde89a8ed6e13f2fb6d1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}