{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd3bae908a45aa2dfe6c7f94a572026c9e21c4d37e5ae4be5eb869d283e80b6d7",
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    "signer": "0xf2bfF6262BF5b5791D86FB72b9c1886a9636D3B7",
    "userId": "6795138"
  }
}