{
  "manageEntity": {
    "action": "Save",
    "entityId": "692950",
    "entityType": "Track",
    "nonce": "0xdcdaa5639d2aa3e8a273621fdd85df7dde2bd52fbf7bd2f8aa34747174ca2ad1",
    "signature": "0xceea4fd71d92fbaba0d3f58f9c65265144402f570eda0dbf0136a862698acb240eac733a2042edc76ad3ffc814de0840096f57f7d70a7564b1f2c705fda42ee51c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}