{
  "manageEntity": {
    "action": "Save",
    "entityId": "22508",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4636aea4942ba31135e6da4d7ab0715aca18b23ec52204af343e482369f9db04",
    "signature": "0x67c611f06e84f01aa7ed34289a0791b7188c33bb24dca8dc55318dbc453d02bd6cdcfc23f2fe92c1e7d67aa191737b6bc40563eb451c13c1599e85b9279030791b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}