{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2c63975f335cdc5983c7b1841e67a21f7e5fecc17ef6ab3724ecd14287c79349",
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    "signer": "0x62c5f26C360539EAB59c1a6AAAcD930200D11Ef9",
    "userId": "643542255"
  }
}