{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114520724",
    "entityType": "Track",
    "nonce": "0x5a1cb7cad1c84fecd00227fcca018153df982d971d1d71f354ea5c53ca9de951",
    "signature": "0x1c2ce5b3d32c765e62f0f99afed36ffb14ab1866983276fc4e15252ed5acf6487c9df35b5263745f9c7f82832190a6dff3486230a0c2551bac8f4326b141a3551b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}