{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc7b9e3b73ce33a3d6b8ddfa6254b71a68f68677294795e99afdc4f99b907e581",
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    "signer": "0x8838cB510ADd37b71093e4FD76B81bdd280860f8",
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  }
}