{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x58b38a1f1803710c7f98d5b913a5fd159100dd8f2146290f2974dbb96bbecfd4",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
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  }
}