{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc6bf43b51218d4605fea81b0f5f04f2b745c1c3fbf306c9f59e8724dfd82ae35",
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    "signer": "0xa804F8349AB4c405a431203be9073fdd09f415c3",
    "userId": "371110556"
  }
}