{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc1ca1ef6d7dba1f3dd12cb124ae56dfbaaee6944e839ec3a2960f110767c77ca",
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    "signer": "0x7484CfBecBcdF6Cf4920CCee5d5A0B165C2187cC",
    "userId": "423895393"
  }
}