{
  "manageEntity": {
    "action": "Save",
    "entityId": "1252856210",
    "entityType": "Track",
    "nonce": "0x3d088a8bf58f31108185f928a3c639cf550f5c3c2566110b3b19f6da3f7a0ef9",
    "signature": "0x6b84973f7f0d225b340ac8a76dacccfeca4d4eda537bed64dcd08cf122fbc216710469e4185f9b91bf2c6c9dba6634ff8c4009ed15ffbc7b6736273276fb08771c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}