{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5928053e6aa9d219d0b038bed208effbeea3a9a13c12fcad5711cb01079d718d",
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    "signer": "0x3aD3db4d8dC1EEBDeEACb3251689908B2615311a",
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  }
}