{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd89c5587cdedf0f4ed1f0ff929992011df5feb29727c82b1cbb140dd042de7c9",
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    "signer": "0x868fBE47A2e8DaF8a0cfC2bD40DAd185C0c7A400",
    "userId": "716529514"
  }
}