{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xddc039f24e253593468d25ff9eb9668f4643b7615155eafee911ad1326ae6a04",
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    "signer": "0x3684616082d9788c06938910884356b3351cD0f9",
    "userId": "465683681"
  }
}