{
  "manageEntity": {
    "action": "Save",
    "entityId": "261224",
    "entityType": "Track",
    "nonce": "0x20ee13cbe13888a13673c53de228c2e96513cab97f187da21c9cf0e10212f041",
    "signature": "0x12ce0945e945270f78271710f63454d47bb3f8d3133260f9999fd6b1cf7ddbf906e982db9662c44117b1254aec5153af4650a570ae288848a33bf8f3bf1013961b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}