{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x38f95749ac3a774d942a571199d9319669d1ecc2d684c31c9d822b064e0d24a3",
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    "signer": "0x62CAC8F59e0dEfdDd02A017bf9D73C01Dd9f4a0d",
    "userId": "633359681"
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}