{
  "manageEntity": {
    "action": "Save",
    "entityId": "48214",
    "entityType": "Track",
    "nonce": "0x81d77e0b17dd045d2c27bff2d70715606bf7d9db1d3e7bf9f9f26febf2d52f3c",
    "signature": "0x6ba5eef3e7c45ab182895dbccdab73b1ea2059e8f1e4fa480ef13e664e96a6a4231a81001ed40a8e38180d0a6e39207571e14600ea45a55313a7c89208370ea81c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}