{
  "manageEntity": {
    "action": "Save",
    "entityId": "296378",
    "entityType": "Track",
    "nonce": "0x14b39225cc34f50392e6b828520ea95e542b283f197584c3ebbfa49bdd84e85c",
    "signature": "0xcfe2649f9379f265603dd52c9ce09f086828664065e2ab6dcf3fa4b0b8ddc233019f525c14a5bd45a33bd10df4877559b222f794b262f1c1fe01d9b6436537eb1c",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}