{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x185e2d42964940fb31eaa90bdf7e7f5f81a20b320dee4f42344fc757b0051593",
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    "signer": "0xdB859da145eAc5f173b5a68ee5F22434899fe416",
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}