{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x06547f21d702f10118f9bd6fa6a415d853236b3e699f3772eb6bb1cc6f26784b",
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    "signer": "0xe87eed0C8d8FbCAA2a72D979B3D0FAf994963f5c",
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}