{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe399ef3f93bda45445dcef01bc4668304b70e707c5175629ba77f88567769889",
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    "signer": "0x67F234AAF68c8574031e10417199f1569b4Ad4b7",
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  }
}