{
  "manageEntity": {
    "action": "Save",
    "entityId": "356118383",
    "entityType": "Track",
    "nonce": "0x93ca26d75bb03db4a3da5225cf7778f5cbfd448519ca78af5af5a986f26135bc",
    "signature": "0xf04a2b6febacb94d586c2a4ada2c7d199244017c284faa8d5a0c5435f9f1862958ae8ec4fa8a7fca72e44f4c403fbe418608c64afcd684eedb39e59dd46d0d491b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}