{
  "manageEntity": {
    "action": "Save",
    "entityId": "1129654135",
    "entityType": "Track",
    "nonce": "0x4326afa5788cbb53bd804e4d91a82ded0f672dea8378ce0760268e1581609975",
    "signature": "0x3cb94b8761f895866a0bbed1aef069251bb409dcdcbcc4733f5c40d6f7bc041c4a9da4bde6c6e84baf81fe75db328f1505d0c3c0608468c61733c93c0bf3f89d1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}