{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x24554d8256e03e39f7d25c45330d74adb2f4351b31d8a069a5ac79631b6bbb55",
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    "signer": "0x2198a0E369C40cA5ECDa0be3166055FCCb14Bb50",
    "userId": "576049552"
  }
}