{
  "manageEntity": {
    "action": "Save",
    "entityId": "997514079",
    "entityType": "Track",
    "nonce": "0x6b9926ef0ea6948bd5c57ae964e732c8089b0f7ad06e89c56401a429f761e3a8",
    "signature": "0xee72e9c9efc0f7a08cd778d5ec2b8207f9de5855ae6a944fab0f8507ae776462726c63e7275d44f85eb9cc33e4771979ffa1522e503ddcf5b4a480bcf657d2e31b",
    "signer": "0xea79EEd60D97517387a63Acc5fd3BeE2227F1658",
    "userId": "220230236"
  }
}