{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x17ab38d0e6711bece8dd44bfb55dc5d392de70b505696dd9e6ae4b4306b01a7b",
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    "signer": "0x4AcA415cD945d703BCCF56C50bD582496bc635bf",
    "userId": "439936876"
  }
}