{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa94d10524338b14425ab0f61bf3f9aebce0cc12624413ddf776b48f93fdf68f0",
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    "signer": "0xa6824b7d42a5c90A56381f9db082330fDa97C6B2",
    "userId": "624859599"
  }
}