{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x586660434f77d9ac59d9312791d47589a3527c2d39d01460f387bebbc8e1501f",
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    "signer": "0x312b5C3647baE91C2fD8A30a64Fe5F6E9ed848d6",
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}