{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x37b9fcdd7a4bd8ab27e3d7224267f9dc49574b2ca16b570aa2710997bd33badd",
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    "signer": "0x7cf8A1d269e7A3Ee5e3247a0A2662C0f4c77cB59",
    "userId": "686744394"
  }
}