{
  "manageEntity": {
    "action": "Save",
    "entityId": "2004028574",
    "entityType": "Track",
    "nonce": "0xb09f7e73e0814d4142ba464926de62c74b1eaa9c8e8c449f733817c90fe30e93",
    "signature": "0xd2180db7c503fa86ef9b6c72a9cac9e19d73502d67978377faa1202a2c5dfac3534f0a39016dc97c76a986f921120a43273b3385377428edf9e9f67d9301a8621b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}