{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x50c1f175c19ed7f58b1ec8d754cb44f080caff7026e29fc1d64df572593cc361",
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    "signer": "0x48c4Dd5236C687c2d3AE6E56BD32006e158dC6af",
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}