{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x561774cd1f6f638472ce9a454b60ecda7df997284a358d8dfa599679c37212a4",
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    "signer": "0x0178E8C15b6BA5d64D168E1b28Eb25f9A7a768CB",
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}