{
  "manageEntity": {
    "action": "Save",
    "entityId": "88640",
    "entityType": "Track",
    "nonce": "0x7ceb2edd890716a00688396bdefad30ba3b470a424c950509f668a3a0b5eefd7",
    "signature": "0x93b72f40d41be72ad2b2306707ea25fe27b582485c061dcbb0d9ca19e321085d52050d319b374624ec53e848e763f4dd0980d6c7aeeef8b0d8fd3087c4989b361b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}