{
  "manageEntity": {
    "action": "Save",
    "entityId": "1701676525",
    "entityType": "Track",
    "nonce": "0xbd792fda63a0cdb01b6665fa20a95aca415217682d26af8c6575cc99cb27d2a6",
    "signature": "0xbca0077a1b55a6f790760096feca09d5247ed43fd65a5691ee4918328d1c23a548441f8fa2c88b57ed4329ba1af7a6af6b4f2c3cff7e5f707fa57045d9848a4a1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}