{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa6c5cfc116bf224af2108f656b5ca292b1e161508c62fed890a5d417e412b291",
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    "signer": "0xE3009eA55bBfF6e54E319Afe0978Ba76Acb58F55",
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}