{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe22be450fd6a9faf52468e912ff811cc96138cd5f609aa47adc7086414d57288",
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    "signer": "0xF0Ec7D424448ce71cAE7087981F95e01CCfAF500",
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}