{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x79861e137b81c1ceab5ee36a345cbacb693f03c70214eb8f40dad617e23a17d6",
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    "signer": "0xa3861Bde44C7a83411C7CdA6C5b5951356E29C39",
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}