{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6373d1d262fda95a838b1d8ea170be774856bfea4db2b72c89949f8d48e569e3",
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    "signer": "0xc307dac1DE7Bfa3CfD2B4c8d8eE81D385e6fB6DE",
    "userId": "827480237"
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}