{
  "manageEntity": {
    "action": "Save",
    "entityId": "105372526",
    "entityType": "Track",
    "nonce": "0xb3b05733c4543197a4149a2d3911e37af2bf9fc23de6f27e6c838b677e97e365",
    "signature": "0x9ac2ed81370eef3f4d74b19593aa19877ce2c5314b819b6d90f9950552744f4f37ce49228c8b59155b24adf3c31c2483efe92c0e1461946a203fe2d2428ace9d1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}