{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4fea7541f867157637673bd31913405983db7ad6f160435d10e53205f13387fe",
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    "signer": "0xd6268f1CBCd5326B1fDfbF9571c189641aFB84d2",
    "userId": "383711863"
  }
}