{
  "manageEntity": {
    "action": "Save",
    "entityId": "832663621",
    "entityType": "Track",
    "nonce": "0xbbf6661eb248e15e20e669acbaa3a917ba27cb69146405373a831a4d8ed7f295",
    "signature": "0x95dd78c85b4cb144b0a91e3b10a19412496f13e46641d9d6be195c97cd24c97e278fd2f0b1f6f6aeafbe5cbceb186cf4ea2590bdf0074b7aaa0176bc5a53df941b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}