{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x615ef9c177d4f8065cf96f93247a8eac244623931b6e021406038c76933ec0fd",
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    "signer": "0x4237e45fABD3fa74fb16723F506CC75aD3Df98cD",
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}