{
  "manageEntity": {
    "action": "Save",
    "entityId": "1927136901",
    "entityType": "Track",
    "nonce": "0x31564aea239abf9143cdba98652ed9e5e3abf9f0df801987346a7cf1e5f62264",
    "signature": "0xb896a733a2a7becd3b98ac53d690fe80d5164a589822c836f1d2fe0c7c31ecb33ae574f576094bc19e5690ca6c9ec5594da315a9a9dd56d9681778485a780baf1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}