{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8770184a334b2b4d0a67868ec751f9afec960086ba5e95467a32ab5c887c8bd8",
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    "signer": "0xEC1f468C1B4c4D01530f7262f5bb2780a1BBa55F",
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}