{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe3e9a6bf65789e6c855648f5e8227f7cace0a2a1d3bf0864310d8248e7b27f3f",
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    "signer": "0xdab798e02D67Cc9f1a6557E23a81dA4686Eb4510",
    "userId": "612527006"
  }
}