{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6a7ad39b8242ee260f79af15ce13ae95f5a0419b3afd2a7514e7d7e221b79fc3",
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    "signer": "0x0DA57Ecc1D264f8eE3d25C042E85De847959fb61",
    "userId": "860783140"
  }
}