{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2b1add280f8514dc458cbf18b4467bee18d158d47c99ed892fdab3c3b8937a78",
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    "signer": "0x7348163f8321a82CF3ebc5cd7Ae1F14265494ECC",
    "userId": "596571683"
  }
}