{
  "manageEntity": {
    "action": "Save",
    "entityId": "1188673434",
    "entityType": "Track",
    "nonce": "0xe5eb42f178d7f5f216ad1664ebeb089fcc39257a89f8536b6d4f41456898b47c",
    "signature": "0xb98aa68f82f8d5a1b28ce3d6d01f16486d99775bacadb68855c727b2d8a2a72d44c92efe4df19ef21bbf023e061e8e89845373776aaae9f4e5164d07002571761c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}