{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x771f1860a3fcde6d74b186a882194d8ca684d5205ade14cbd35ebf6af5b81b12",
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    "signer": "0xDF7001f05D03f2FeE54a69Cf9132ADcd9714A81c",
    "userId": "169018689"
  }
}