{
  "manageEntity": {
    "action": "Save",
    "entityId": "1402295474",
    "entityType": "Track",
    "nonce": "0x060daf3efc780a4b2e163ff7d2717186cd79a6fa931a146fa1a824fde198710c",
    "signature": "0x734be319b32beb13dca2ebb88bc40ce66fe34396246d3650c773e5d32d0281c8433da8e45a89e56125d15f2f4c27afa48ab3cfc461bb81f41b23d7bebd50c54e1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}