{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x44dccb856bc96bbd8a580ac86f1054a0b7f71c48956bdc7c65f85c4a56be6f80",
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    "signer": "0x0DC7E7004FFc424a8E4536Bce69afaaaFa185E41",
    "userId": "59880570"
  }
}