{
  "manageEntity": {
    "action": "Save",
    "entityId": "27234357",
    "entityType": "Track",
    "nonce": "0xf4e04f18c64896d41b1dff883ee42f4b9ba9f5049b3469a7ea51b72b1d45f104",
    "signature": "0x842af74d47eefac3e7992be5fc9664849f193cd24d993f3995daf89801b6fff705513b0127e2f5ccf79c906291c72fcdf1a8cc02e4c938c795b744a66791886c1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}