{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5be4c649e9ccea26728d14f2289e197db30848ad156b9e4ecef7caa352eb1e49",
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    "signer": "0xa990C4ff71a3a9F87F511cf5D9f06452Cbc9c9a4",
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}