{
  "manageEntity": {
    "action": "Save",
    "entityId": "828197700",
    "entityType": "Track",
    "nonce": "0x3046b102ba56d4fbe513733b297e4aa54d8c056bc01472737fde269a6d4fdb9f",
    "signature": "0x7fd6afa57af0fc373041b1ed9c52eccd13196950330723bc5ac642b028406f486f0412b950eadde8e222727aed30a5067b0a88742c41af7aaad491806fa652e71c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}