{
  "manageEntity": {
    "action": "Save",
    "entityId": "850885646",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a3ab6767566c57cac983534249e2ce56ffc2da8141f0512792782210022ec56",
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    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}