{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081787146",
    "entityType": "Track",
    "nonce": "0x30ba2ad1adb34998d403ff8fdb5185af69d92ec500d2866640b398d75a16844c",
    "signature": "0xda6bbddeccecf2103613cb9faa2e7ca68f3d4e6e1a61e90236bc2b8e2c34eb5a38743b7a9e4dd3335565af04070b1afd07accd768b175f689944b49cdd76892a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}