{
  "manageEntity": {
    "action": "Save",
    "entityId": "2131241642",
    "entityType": "Track",
    "nonce": "0xf69fddae5d2a6b58e5a76f707c7e34c2ce712c524d59e46273116c2b36d64122",
    "signature": "0x2dae39e799ff33d165ddb6d46af6a25382d5682581e6b5b6cbce11279a0f086d7300ba48d9cd3ca75dc1971a0a2431aac1f97e0d143df9f7abbc9a31d3189ae91b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}