{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcf6e46a544daf4d4dbbade5f694998798740d3ab197af75bdcd6264cb5325ab5",
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    "signer": "0x79770FD07793ad1DfB304d64f0605418795fc311",
    "userId": "556468587"
  }
}