{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x95ab7d40a01cde7f6633be7c777a7b6a1603b9f982662a84eed467f19e7e634b",
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    "signer": "0xF5aE3A86843662910B5b3B056C9b489729A722cD",
    "userId": "760534498"
  }
}