{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x151067ec4001bbe7dd3b0d09a756bdc50212f97967b88ace09644504f5ec3a84",
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    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
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}