{
  "manageEntity": {
    "action": "Save",
    "entityId": "692950",
    "entityType": "Track",
    "nonce": "0xe5456a520228d4041fc5fa2e8cee13385804e5247249cfa6494d44d3486bdb62",
    "signature": "0x0477bc637af1a5b9b75ea045d674cd47481250416044627c783e00f5270d69af36067ab9d54e86824d2e5c5d2520713981cf4053993bf4317a951aa7494052541b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}