{
  "manageEntity": {
    "action": "Save",
    "entityId": "565902",
    "entityType": "Track",
    "nonce": "0x7d4eee32dc8b2e73bf9a2011744095eac60c64bfa24d8c2513a4a69a26554f4e",
    "signature": "0xac0017fb5147562baafd30eb3bb20583d3cedee5460a55de440d4a60d62253933c07c3ec4bbccac7b44e74a41d87eef4f121f7bf732be953577de517db1adf0f1c",
    "signer": "0x0C9AEa01FA89c6397d469Cc761335021a2a5B07C",
    "userId": "364579809"
  }
}