{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1584064eb26892f3633139577b61cd1bd0154de26aacd7fdc45ab5f3f7c62738",
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    "signer": "0x0010486d8a8487807d994603f7f05F2ECe966dEB",
    "userId": "657395938"
  }
}