{
  "manageEntity": {
    "action": "Save",
    "entityId": "1756366265",
    "entityType": "Track",
    "nonce": "0x7a09274450451b31738045b5044d3666af935d7af5724b1a9389a03023b00904",
    "signature": "0x2530534a2112b119f98d7f44dda304136c05a916f5cc9345299c896e1b482a1f5ec74bb92dbe92a156d50ac76d721ebe4714be8e47d5b156c91e860de9cfa93c1b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}