{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7fa3d60b0b81985f41eceb2b7031c9d51138184725e1f1342b7d6bf8027ff03c",
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    "signer": "0x2d41154282f1102cB162789C96108187181501E2",
    "userId": "237552587"
  }
}