{
  "manageEntity": {
    "action": "Save",
    "entityId": "824506957",
    "entityType": "Track",
    "nonce": "0xba948b017e5d3a0f1415e38bff242123b0ae87e17b89785aa04bbe81ed1c46ff",
    "signature": "0x8c6d8813ccd050a2860a6096868ada3cdcef7be0fc5d04b693aa8a3d41b7b4ba06998638a4027af0a4b29c36815ddf2a44fde1687edbf6a0423b34815aff4f091c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}