{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4dcb8aacb626e11eac51d5985781526d6466f6693da3d4f28acef6976fb53122",
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    "signer": "0xd19d2E8872f63541eF1e0afE1c2F646DF9Fd5A38",
    "userId": "986740871"
  }
}