{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe77c7f93a19990ab15aa9b6b1b77a84e820cbcaf34caa01852057cbbfe4b7e7c",
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    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
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}