{
  "manageEntity": {
    "action": "Save",
    "entityId": "635105",
    "entityType": "Track",
    "nonce": "0x943589621b2ea34bba075be4706eef57db059341f5c13ed8e08d1836d1d7a338",
    "signature": "0x177ae28bb1e77f68419617717becf4cc638a104351c8f1242b0eec6a4b8b8b9338c03f4c23b32bf66857d8c3dd08140c98e709d1acd97c3c2e6b5fe14d85e4721b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}