{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x474134f9449b5f8d9f0915fb05984e0f75e114dc39acb8d4f9a3ac44f43245bb",
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    "signer": "0x6f40eFAab3aD8EFfE499C82F1D060e8784231ECC",
    "userId": "635110117"
  }
}