{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xde987f66304cb6ac4bd0b9d2035c9b13acb67a2979809b0b32986540cf664aff",
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    "signer": "0x5ecfe7D3eE5B8A4A2712228c53c986319bEcB4bd",
    "userId": "569652899"
  }
}