{
  "manageEntity": {
    "action": "Save",
    "entityId": "436643290",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf87b892c241edeae9ab226cc3d920c16d46dfe628aa21aaa88c77b7d77d436c0",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
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}