{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x457cc15c3213d7bcb0f881b5e6514ed4c599f65bc9e020754282767a9b734d61",
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    "signer": "0xdA70748555453bF7Cdd9F8abfe38857a5280F758",
    "userId": "458052196"
  }
}