{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ca5a5ccc590f32074cc1e579fb9959e759a6dd5f922e8435b33c6b6dca586a2",
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    "signer": "0xaBca4973b8911Fb110a95E6e00e5BBFBCa671473",
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}